i do not think wme will be able to do a final fantasy type game.
A customizable battle system - First! Is a battle system implementable? If it is, what types of battle systems are available for WME? Is it easy to implement?
No idea.. i would like to know as well.. but i think it would be very hard to implement.
Saving using save points - I want an RPG that only allows the player to save at certain points of the game. Does WME support this type of system?
Yea... in my game i already use some sequences were saving is diabled and will auto save at a certian point or you click on a save point icon to save. It is a simple matter of scripting the cliclable thing-o-me-gigger to activate the save instead of the default keybinding method in the demos.
2.5d capabilities - 2.5D means that I can use 2d and 3d right? Would there be any complications if i used 2d sprites in 3d backgrounds?
Yes.. that is exactly wat WME rules at. Though at the moment it is made for ONLY 2.5D.. this means no animatable camera. Static backdrops (or not so static with partials, video over lays etc etc) with 3D realtime on top of them.. no camera panning or zooming or anything.
Party System - Does WME support Party Systems in created RPGs?
This is a adventure game engine.. so just keep that in mind. Though you can have multi actors, with their own inventories etc.. You can do switching of actors.. so mabey have a special kind of inventory that stores characters.. so you can swap to other party members from a button bar.. I have even seen code on this board to have actors follow each other about os you could have them all on screen controlled by a leader character...
Just remember this is an adventure game engine.. NOT a rpg engine. I was also after a sim thing... but settled on WME as it is the best looking engine i could work out how to use. I had to modify my game a lot to work with WME...
Have a look at q-gears or rpgmaker 2000
If you do find a final fantasy engine around the place.. let me know.
Have a look at
http://tkool.jp/products/rpgxp/eng/i think he also has a full 3d one in dev at the mo...