It's great at first until you reach arena 7/8. It's a blatant paywall, if you want to win in those arenas, you need to have higher level cards. Legendaries start at level 9 so if your cards are not 8/9, you are not winning. Developers are milking this dying game and are more focused on their newer game Brawl Stars so don't expect major updates/balancing anytime soon.