[SCRIPTING] [RMVX ACE] SPRUCING UP 'TEMPLETON'S WORLD MAP' SCRIPT

So I came across a cool script that simulates a menu based world map, similar to what you might see in FFXII or Tactics Ogre. The link is below, and it has a demo as well.

http://www.rpgmakervxace.net/topic/19934-lune-world-map-templeton-mod/

It's very cool, but I think it could be tweaked and optimized a little bit. Some support I think would be a good addition, and that I personally need;

-The customization of the 'shop' menu. Not all locations have a shop, and this feature isn't exactly a must have for all games. A possibility to turn it into something else?

-The ability to 'remember' the menu position on the map relative to where you left from. For example, if I'm at 'Dark Woods', halfway through the game, (so let's say, 16 locations downwards in the menu) when I leave and go back to the map screen, I have to press down 16ish times again to go to a similar area. Many maps in games like this have the cursor be where you were when you last were on the map.

-The actual 'movement' is a bit wobbly and jerky. What causes this? Also, the location cursors (the icons used to signify places on the map) are only showing up 'one a time' for me. As in, I pick one location, and the other icons disappear other than the one that's currently highlighted. How can ALL the icons for all available areas show up at the same time?