[petercooper]

https://lobste.rs/ does that, but the idea has failed to find any support on HN over the years.

In terms of "doing" something with the points, I quite like Stack Overflow's approach of letting users with higher reputations do more things. There is a little of this on HN (e.g. flagging), but on SO it includes things like editing posts, deleting comments, review flags, etc. But that would lead to a broader, less centralized system than YC is likely to prefer, and it's their site and decision ultimately.