Well okey you can count me in! Can do interiors/exteriors and probably some quests! However here is what i think is the best plan, make grids and make people work on their own grid(as you said) After that you take all the grids and combine them. After that we start working on main quest, then side quests. When we got all the quest plans worked out we start implementing them in the game. Make the dungeons for it and stuff we need, then we can start making misc stuff like dungeons/camps/other nice stuff to explore.. you get the point. Thats what i think and for getting people you should look around the forums because i think i saw some other plans on making a Cyrodil mod.