I am not even sure if I'd trust myself with serious amounts of BTC, why should others do that? Because I write/read a lot in this forum, read Bitcoin and Ripple sources and do a few small projects on the side?
Also, what's the benefit for your escrowers? A percentage of funds? A fee? The chance to check out your ideas first hand?
Benefit of escrowers:
I would propose that escrowers would receive a fractional piece of equity, essential as payment for their services in this case.
Trust:
You're right, this is an issue, and you have valid concerns. I'm not stating that this is a perfect solution. I'm merely saying that this is a possible step toward a better funding process than sending funding directly to the fundraiser (me in this case).
I am essentially proposing a 3-step escrower/board member admission process. The first step is a community member expressing interest, the second would be a forum poll, choosing 5-10 escrowers from a pool of applicants. The third step is entirely funder decided. Once we have chosen these escrowers, you as a funder would be able to choose which of them to send your funds to. You could choose the escrower whom you trust most, or feel is most knowledgable about the topic. Because they control the purse, they would be your representative toward guiding the project.
Another note regarding trust of the escrowers is the possibility of doing this through a series of multisig addresses. I will work out and propose a scheme using multisig addresses and m of n transactions to allow for the funders and the escrowers to have a maximal level of control over how their funds are used.