Totaly agree. In the one homebrew campaign in my group (we have 3 active games but only one is homebrew), the dm has created a frame work, but players have created organizations for him, helped him flesh out the pantheon, taken his hand sketched maps and polished them up in illustrator. Its a group effort, and we are all more invested for it, then we would if he just emailed us 200 pages of background to read through.
There are potential downsides to this for certain play-styles, but the upside is pretty much unbeatable. Anything that sucks away apathy and brings people to the table excited is a win-win.
Otherwise, you get resurrected by the rest of your party just so you can tell them where they're supposed to be going next and why.
Don't be the guy who gets resurrected by the rest of his party just to tell them where they're supposed to be going next and why.