MGE & ToT both load so much from mod folders but they of course don't load custom dlls from there meaning modders like myself that want to make changes to the GUI backgrounds/city view/throne room/videos/spaceship etc have to write big guides telling players how to backup and replace all their core vanilla Civ2 dll files. A Civ2 engine without that limitation built to load videos and ALL those extra dll files from a custom mod folder would mean that the original Civ2 graphics could be easily loaded by fans who own Civ2, while big total conversion mods with custom dlls and videos etc like my & @Metro Polis 's big Heroes of Might & Magic 2 Civ2 project (which will hopefully be finished and released in the next few months if I can get my act together lol) could be simply placed in a mod folder and loaded without any hassle (eg NOT having to swap around core Civ2 files).
Quoting myself here lol.. but just thought I'd mention that TheNamelessOne has added full mod loading (eg dlls etc) from the mod folder support in ToTPP and (after I pestered him lol) is looking at custom video loading from the mod folder too. Cool to see something we were talking/dreaming about earlier in this thread become a reality (well for ToT at least). Also thought I'd let you guys know in case you want to see an example in action before trying to set such a thing up yourselves in your rebuild (if you do).