Well, I don't see it as a big limit considering that we're in cryptospace and everyone is going to use crypto for deposit, so currency is one of that thing that is no sense. What you purpose will not solve this problem because
if you choice your currency from account settings it will be always the definitive one. About fast registration I'm in agree with you

Yes of course I don't see any problem with that either, after all one can deposit in whatever cryptocurrency of choice and there is no limitation to that, the currency issue will only rise when a player wants to make a deposit and local fiat currency. I commend you guys for your persistent presence in this forum and providing answers to players' questions is the best way to start as a casino that is ready to build a good reputation on this forum.