I also enjoyed Vamire Survival which brought an unique dynamic, the difference though is that for that game there came a point where I was just done with it. Balatro I feel I will keep playing 'forever'. I see Balatro added challenge mode but I haven't even bothered to check that as the core game is just so much fun.
The main downside really is the time drain as each time I start a session it's 30-50 minutes that just flies by.
Yup it's a really downside, if it takes too much to finish a single game 😅