re ToEE - CoE:
As we all know, ToEE had a disastrous release. Crashes, tons of bugs etc. CoE is a community modpack, which has been in development for years [the first release dates back to 2003] in order to fix the bugs & crashes, enhance the gameplay with adding new areas, items. etc.
This is the full changelog up to v8.1.0.
As you can see, it's a huge freakin' list of fixes, tweaks and enhancements. This is probably one of the biggest community "let's fix it" modpacks released for a game ever. It just shows that the game had a huge potential @ release, even tho it has failed because of being in a beta state at release. [I never had any crashes with the 7.x CoE modpack btw..]
Anyway, just some additional notes: The story in the game is not on BG II. level, but the combat system and the combat itself blows out other cRPGs out of the water IMO, but again I always preferred the turn-based combat [..especially if it's based on a system like d&d 3.5] over other systems like the RTwP.. The game and the battles ain't that hard at all, since CoE is "newbie friendly", [especially if you powergame] but even in that case, it's fun as hell. [+ Which RPG is hard if you powergame anyway?]
Ideally, the perfect cRPG recipe is [again..IMO]: The deep story[line] and quests of BG II. combined with the ToEE CoE combat system/gameplay.