"A price increase of this type might encourage proposal creators who are not sure they will get funded to create shorter term "milestone" type proposals (e.g. phase 1, phase 2, etc), instead of creating one post for the entire development interval. Of course, each of these subsequent proposals would need to be voted-in, but this would also allow for more oversight of the project."
Proposals should have milestones, giving an open check for a work where we won't know if it'll be done in the future is like a bit of nonsensical. They should add a "rejection or downvote button"
I'm glad you're looking ways to improve the system, in the end we all can solve things whithin communities. Regards!