Sooner or later, Gamdom will add more cryptos to their site, especially if many members suggest the same. Of course, that will make us happy because we can choose the coin that we love and the best is to reduce the fee if we want to withdraw. Meanwhile, we can be satisfied that they already have LTC, which is lower than BTC for the fee. So we can use LTC if we want it.
Hopefully, Gamdom can add an exchange to their site to convert from one coin to other coins and send the coin that has low fees.
I am not sure. I don't know if they have a plan to add new currency in near future. As udidrone already said, They are in the market for over 3 years now. and there were no significant changes in payment gateways/methods. Yep, LTC is cool when it comes too fees compared to BTC and ETH. ETH was ridiculous for the last two years.
Another thing is, I don't think they are going to add an internal exchanger in near future. Every casino has its own business strategy. We don't know what is their strategy but not having internal exchanger benefits the casino. I guess you got the point.