Perhaps, but I still don't think this justifies less stringent management. Besides, you can always open with "I know we can easily get $50000, how much more do you want?"
You are welcome to offer whoever you want to act as escrow. The point being that there are addresses dedicated to wikimedia donations. And having the funds there and ready for wikimedia to just say "yes".
I believe that projects like this need measurable attainable goals. Currently it's (appologies for paraphrasing) "If we raise lots of money I'm sure wikipedia will accept bitcoins". I'd like it to be "If we raise $100000 wikipedia will agree to accept bitcoin donations for at least 2 years". The key difference is that with the first there's a very real danger that I'm essentially throwing my money into a black hole, which is no good for anyone. The second one alows anyone to judge if the project was run fairly and achieved its goals.
Essentially I'd like to "kickstarterify" the project.
That's great, it would be nice to have a figure, but it doesn't seem that wikimedia is even considering this. So until then, we should raise what we can to prove our intentions.