I often feel that use of rationality guides me towards the basketbalists, that already exist.
I have been looking into doing this. Pm me if you want to do it together. I'm from Toronto but am willing to work with people from elsewhere.
(Especially if you have any product design experience, or think you can figure it out)
Y combinator is super into this. It's easier to solve a big problem than a small one, mostly because there is more motivation, excitement, and it's easier to get people on board.