Basically yes i'm talking about rewriting many of base class from RPG Module so is that why i need an editor, I know that i need to rewrite many scripts but it will be done, the only what i can't do is to write my own BattleSystem (although i use a few scripts that i made compatible with my changes like your CMS), the only i can is minor fixes to that so basically i left BS as i received from forum (i rewrited damage, maxhp, hit tests to fit my idea what ideal battle should look like ( i like games based on DnD rules so it will pretty similar)). E.g For classes i added few improvements (for now i see in future that will add more when i have a basic editor completed), half properties i keep only for compatibility with RPGMaker editor(but it also could be removed since my game will not use them at all - I will remove all references to them), and other half i will use in game. The new properties i added to class is e.g. type_of_weapons that class can use so if weapon tags include tag from type_of_weapons the actor can use a weapon.
ps. I will basically re-write many of RPG modules, some fixes to BlizzAbs, Add Many new function since game will be basically a sim game with rpg elements, Many of Windows because i want the main controller of game will be mouse (Although i'm pretty satisfied how your CMS work with mouse_controller from blizzard), Scenes since base res will be 1024x768, and also add many new scenes to make possible to manage sim character of game, after i complete editor i will search for script that enlarge tiles to make it compatible with sprites about 120 pixels height, and might change sprite class to support more than four frames in sprites (since i want an animation of every work for every sprite), Many Game classes will be also rewrote to fit them to sim character of my game, basically i rewrite everything besides maps and classes that are bound with Map and Graphics (besides res script). Since From the beginning i wanted to use Xna and C# to make my own engine, but to lazy to write editor with maps so i decided to go with rpg maker.