I like the concept of RCV, never done it so I can't speak to the actual process or execution. It seems to me that RCV is more effective in local races, and maybe some state races. I don't know how it would help at all in gerrymandered house races, the point of gerrymandering is to get as many like minded, homogeneous voters in one race. RCV doesn't change that. Also with house and senate races the two parties will still coalesce around their chosen candidate.