There are some casino that has already integrated Monero as a payment method before the compliance risk which led to the delisting of Monero on some tier 1 exchanges and the integration of Monero can still happen in some casinos. However, it's going to be 1 out of 10 casinos because of any form of anonymous deposit or withdrawal against casino Master license holder rules and regulations.
To be honest, I don't know any topcasino that has Monero as a crypto to deposit/withdraw. Talking about coins, one thing that Roobet is lagging behind in, is the integration of new coins. They don't need to add 20-25 more coins but coins as BNB, TRX, USDT should be a nice addition in my eyes.
Betcoin, Fairspin, BC.Game and I think there still a lot of top casinos that accepts it. Perhaps the issue of these casinos is that it pose a threat that they may not know who they are interacting with or whoever plays on their platform considering the high level of privacy of Monero. I think it may take time to add them but for sure Roobet will find a way for that.