Ranked choice for single-seat elections can create situations where your ballot backfires, which is why it has been tried and rolled back. It works for proportional representation, but then you've got people divided ideologically rather than by region and their local communities.

The divide by ideology (proportional), or into "safe" one-party states and "battleground" states (plurality in the US) is the biggest issue, the two parts of the human experience losing touch with why the contrasting values exist in the first place.

That said, good point on the issue of the size limitation on the House.