Here's an age old adage for the outdated generation: "If you want something done right, you do it yourself." I don't think I truly understood its meaning until fairly recently. If you really do have a clear vision for something, that automatically makes you the best candidate to bring it about.
All of this talk about the "Idea person" reminds me of when I was working in the electronics department at Sears, and the pompous district manager who had never worked the front line insisted we implement his 'brilliant' idea to crank up the volume on all of the display TVs so that they could be clearly heard from anywhere in the store. Everything that's wrong with that scenario should be obvious, but that was his level of disconnect between his 'idea' and reality.
Unfortunately, far too many people are worshipping at the church of Steve Jobs for the concept of the unskilled idea person to die out any time soon.