There are lots of games I love but only a few that I can't find something I'd change about the game.
#1. Founders of Gloomhaven: I'd make the board look prettier. It;s a great game with a drag appearance.
#2. Anachrony: I'd make an insert for all those little pieces. The biggest beef I have about that game is the set up time which takes forever.
#3. Everdell: I'd make all the expansions playable simultaneously. I'll me trying to find a way to houserule this once I have Spirecrest in hand.