I played and finished this a few months ago.
What can I say, this is a masterpiece. One of the best rpg maker games.
If I had to nitpick I'd say that there is some balance issue between characters and classes (the robot feels especially underpowered with his steep TP and MP costs and even throwing at it the best equip or giving him items that increase max MP do not make it shine, not even in endgame). Also I expected some kind of uber reward for defeating the Slime God in that 1vs1 :P
But, apart from that, I just wanted to drop by and commend you on making such a great game and giving me so many hours of enjoyment. I'll remember this game fondly.
There was also a bug that crashed the game and it involved the Robot's Scan ability. I think it was that Scan would crash the game if the other allies took any action other than guarding in the same turn. But take this with a grain of salt, as I haven't played in a long while.