Divine RPG is in the hands of a new team after Xolova decided to strike out on his own and make AoA
Lord of the rings mod...
Thaumcraft 3: because at heart i am a wizard, and thaumcraft and some other magic mods are the closest i can get in minecraft
Any mod that adds dungeons/structures/places to explore: why? because exploring is my favorite thing to do in minecraft :P
umm.. it was updated for 1.2.5, then it didnt get updated until 1.4.5 so it could be anywhere from 1 month like most other mods, and 6 monthswhich is how long 1.2.5 to 1.4.5 took, going to guess closer to 1-3 months though