People sleep on proportional representation but it would honestly be so much better than either FPTP or even ranked choice.
The problem is that to implement it here would probably require a constitutional convention and a complete restructuring of our electoral and representative systems. Which, yeah I don't see that happening anytime soon and with the current government, if something big like that happened it would not have a good result.
So yeah, ranked choice to improve our elections until we have enough decent representation to implement proportional.
I mean it could still go by state, but we'd have to ditch the concept of districts. Each state could still have the same number of representatives that they already do, but instead of each district electing one rep, the whole state would vote, and the parties' seats would be allocated by overall proportion of the vote they received.
It would be fairer for everybody, and eliminate gerrymandering. And it would enable more parties than just two. But yeah, it would require a constitutional amendment.
Oh and the Senate could either stay FPTP or have a set threshold for each seat. Like there's two seats total, so if you get 50% of the vote you get a seat... but you shouldn't get both seats just because you got 51% of the vote. So there needs to be a threshold, for the second seat, like maybe 67% or 75%. So then the threshold for the first seat would really be 33% or 25%. But of course that gets more complicated when you add more parties. So Senate could honestly stay FPTP but with ranked choice, for the sake of simplicity.