I'm only at level 406 because I have restarted a few times on different phones. I don't necessarily want to reach the thousands. I play more casually than that. Even so I don't want to go back all the way to level 1. That would be tedious. How about an option allowing a player to start a new game at a higher level?
One power I have really wanted is to undo my last move. Sometimes it's because a see a better move at the last second when I have already made the other move. Sometimes what I expected to see happen doesn't. I want to see where I went wrong.