Cool idea. Do you think some youtubers might be skittish to really show their stripes like that? Like I wonder if they may not want to rock the boat too much if they already have a good gig going for them on youtube.
I guess it varies, the mega famous people would be slow to do it, but people with decent followings who aren't exactly rolling around in the Adsense fortune would be quicker to take the risk.
I think that should bring new video makers in the first place, not youtubers.
Only when small youtubers will see how much these guys win with their videos, we will see these small youtubers coming. Then medium sized youtubers and finally superstars ;)