I always wanted a mod that would shift the responsibility of doing the main quest to another character. I didn't always wanted to be the main Hero. Sure, it was fun the first few times, but I got tired of doing the same quests every time I started the game, and now I feel its just a burden. Now I want to explore the land, and solve different problems in different regions, explore, but the main quest stays in the back of my head as a burden. With FCOM and mods like Enhanced Economy, I got closer and closer to a feeling I like now in Oblivion, that I am not the center of the "Universe", and that there are many other heroes like me in the land. And now with the new version of Vilja that adds the possibility to be a companion for an NPC, its even better to feel free and relaxed in Oblivion.
So, my vision of how this mod would look like would be that you start in another place, not the imperial prison, like some of the mods that already exist, but now the main quest would be started by an NPC, a real NPC, that you would see in the world at different times. And this NPC would solve the main quests at different periods. For example he would clear Kvatch after 20 game days, and finish the final Quest in 300 days for example. And during this time maybe you could hear rumors about what he has done, or even see him, for example at the entrance to Kvatch in day 10 with Iron Armor all over, and meet him in later quests with ebony armor and enchanted weapons, so you could see how he improves. But while he finishes the main quests maybe it would be possible to direct the mod content to you, for example to continue the mod Kvatch Rebuilt, even though he cleared the City.
Anyway, this is my vision, if you have another one post bellow.
I know that many people are busy with their projects, but I hope that someone who shares the same feelings I have about the main quest maybe would do this mod, since I presume that it won't take so much work as other projects.