I hope Duelbits will add soon the TRC20 and BSC20 version of USDT since only ERC20 USDT is available while other blockchain is already available on the casino.
If duelbits adds this it will be better than other coins in my opinion, because these two stable coins have cheaper transaction fees compared to stable coins on the ETH network, when I saw the news duelbits added apecoin then there are possible that those stable coins outside the network of ETH will most likely also be added to their payment system.
every casino should also think about transaction fees if only they pay attention to it of course many users will gamble there, sometimes people prefer to look for alternatives for cheaper transaction fees sometimes using the ETH network is so annoying and eats up a lot of transaction fees
That is why having more options to deposit in a casino is a good thing in my opinion. Not only they are giving the existing player more option but also there is a possibility of attracting new users from the community of the added cryptocurrency. I also agree that it is annoying for a small time gambler to have his funds eaten by a larger transaction fee when withdrawing. Having the suggested cryptocurrency is a huge savings for us.