REQUEST FOR FEEDBACK ON PROJECT CONCEPTS

The way I figure it, I would be a fool not to take advantage of the vast pool of knowledge and expertise that can be found on this website. I am working on my first RPG and have some ideas but would like to get your feedback, suggestions, and any help that you are willing to provide. WIthout further ado:

The Game: Crimson

The Character: Lore Persephone, a vampire, and one of the most promising up and coming members of his coven. Lore is old but fairly young by vampire standards, but more important than his age is how well he has learned from his many years. He is a skilled warrior who understands that strategy is the strongest weapon of all. He is efficient, trustworthy, and loyal.

The world: Vampires are common, as are werewolves, zombies, ghosts, etc... Nevertheless Life thrives. Vampires and werewolves hate eachother (Cliche? Yeah I know) but werewolves are so primal and viscious that vampires usually lose in a fair fight. SO the five covens of the world work together as one to protect themselves and eradicate the werewolves. The covens are ruled by 6 Blue Bloods, 1 for each coven and then 1 to oversee them all. Humans know about vampires and some humans even run blood houses where a vampire can go, pay a fee, and have a drink from a lovely lady. There are also those who hunt and kill vampires though they are very very rare.

Classes
Wraith - a melee fighter with strong attack and an absorb effect with every attack. Since there is no healing class this fighter is also the primary means of healing. Abilities will be attack boosting or special physical attacks.

Blood Mage - a mage type class with strong magic. Deals magical based attacks and gives status effects to enemies. May have some buffs as well. These spells will be the best way on average to deal damage.

Reaper - a special class with strong defense. Every time the reaper kills an enemy with a physical attack it stores a "soul". These souls are then used to cast life manipulating type spells or summons. There may be a heal type spell as well.

Features:
A Day/ Night system - I plan to really use this system and not just have it for the sake of fleshing out the world. Monster encounters will change from the daytime to the nighttime. Most notably humans will be more common at day, and werewolves more common at night. Also, Lore will be stronger at night and there will be more vampires available to meet with or buy things from. Some areas may be unaccessible at certain times of day as well.

Class changing in battle. - I actually want this to be at the core of the battle system for my game. There will be three classes each with it's own strengths and weaknesses. It will be necessary in nearly all more difficult battle to switch classes at least once or twice to employ these differing strengths.

Hp cost abilities - being a vampire, the main character gets his strength through blood. In order to use most abilities and spells he will have to use some of his health. In my game health will be an even more valuable resource than normal.

Summons - The reaper may spend souls to create or call forth demons or old gods to join the party for the remainder of battle or until they run out of health. The best summons may have to be convinced to join Lore by battles or puzzles or something.

Rune System - Lore will not change weapons. His blood sword has been his since he became a vampire. It can however be customized by going to a rune master to inscribe up to 2 runes at a time. These may add an element or status effect to the weapon or it may just increase his stats.

Edit: I totally forgot to mention the feed stuff. So lore gains health form dealing damage because he is "feeding" on the target. This is usually good but there is some bad as well. Enemies will almost never cast status effects on Lore, but many enemies carry disease which Lore can end up catching from feeding on them. Worse still werewolf blood is posionous to vampires and will actually hurt lore rather than heal him. This makes werewolves a very difficult enemies.

So that's pretty much what I am looking at thus far... any critcisms, questions, comments, or help would be greatly appreciated!

My hope with the classes is that it will keep it interesting. Since I want to use only hp as a primary resource and cut out mp, I was hoping that by having three very different classes it would add a level of strategy to the game.

Do I use my strongest abilities by being a blood mage? If so I will lose more hp from casting spells and have a lower defense but my damage output will quite high. Since I did that, my hp is low, so I will switch to wraith and gain health passively. Of course my damage is not that great and I am weak to magic! I have a lot of saved up souls so maybe I should just get a party member to help me out while I fight. I will switch to Reaper and summon my demon and then hopefully get the killing blow on this enemy to gain a soul.

That's the idea anyway. Do you think it won't work out well? If so I can tweak it into just one class.

Here is another question for anyone who wants to help me out. How do I make it so that the "attack" command causes a hp absorb type effect? I was going to make an event cause the use of a skill but I see that there isn't an option to make events use skills. Then I tried to add a skill to the weapon but I see that it only works that way if you use the weapon as an item. I am therefore stuck. I would like to know how to do this and similar things as they play a sort of big role in the game design. Any help would be greatly appreciated.

Ok. So I have just finished a bunch of technical features of the game. No noteworthy maps or anything like that but the completed list now includes:

Changing class in battle - 3 classes all with their own skills and commands. (Completed)
A playtime clock - to keep track of how much actually time a player has been playing. (Completed)
An in game clock - 1 hour of real time is 12 hours in game time. (Completed)
A day and night switch - to change panaramas, monsters, and access to certain places. (Completed)
Sundials and Moondials - these allow you to change time to noon or midnight respectively. (Completed)

Still to do:
Make or procure all graphical things. Sprites, panoramas charsets, facesets, animations, etc...
Build some maps.
Make some monsters.
Balance leveling.
Get some decent music and sound effects.
Make a rune weapon system.
Make a summoning system.
Set attack commands to perform special skills.
Write the story.
About a billion other things.
Avoid hanging myself.

Are there any of these things that I still need to do that anyone thinks they can help with? Tutorials, resources, advice, I'll take anything you are willing to offer. Thank you all so much for what you have done thus far. I really appreciate your help and kindness.

I actually really need help with a rune system. I need it to be like materia from FF7. Just some sort of equipment that acts on the weapon. Does anyone know of a reasonable way to do this? I am thinking I should have runes be items that get equipped via events or perhaps actual equipment but I know there are limited slots for real equipment. Any ideas or fingers pointing in the right direction would be much appreciated.