I guess from my side it feels like it's something of a different business relationship to the usual case. There's enough trust from backers that over-funding will ensure a better product, even when the details of that are underspecified.
I wouldn't particularly mind things being more nailed down, eg "Here's my day rate, and you'll get weekly updates" but there's still a bit of a sense that OSS development needs to be apologetic for being properly sustainable, and it is awkward to navigate that you know stacks of people who're also putting in hard work, and not having the privilege of being paid to do so in working hours.
I think there's also a trade off - not having to justify decisions case-by-case does mean that I can just focus on stuff done, however I think that's best spent.
I also think we need to redefine our expectations. The amount of money this project raised on Kickstarter is huge by OSS standards, but in terms of business investment it's actually what I'd consider a sensible amount, and I'd hope to see it become more normalized. If you look how an individual backing compares to contractor day rates, the investment most of our backers are making is clearly worth the deliverable they're getting at the end of it.