This is a very well-presented proposal.
Personally I'm not a fan of this kind of tool for making decisions, it's certainly not something I would use, but this is not primarily why I'm voting against the proposal.
My understanding is that this proposal is to fund the first stage of the project, that developers would need to be hired to implement the second stage and we don't have a ballpark cost for that.
I also agree with The Prof that I don't think this is the right time for the project.