i don't mind if cards get a little push but when their power is diminished, it is not good for the investment (which was massive for prince rennyn)
I also don't think the reasoning is correct (win rate), may players are just copy pasting instead of being creative. If you look at the matches of @jacekw in last season, he played Selenya as much as Prince Rennyn and he played Plado twice as much as Prince Rennyn..