Yes you are right and there is need for expansion to accept and includes some other currencies especially that of yours and ours, looking at the population IDR, NGN, PH, I think this people gambles more in the forum and if adding their currency would boost the growth of Rainbet.com then it would be a great idea for them to do so. Most time someone might not have spendable crypto and could likely have some spare catch at hand and may decides to make use of those cash to gamble but since their site doesn't support those currencies they wouldn't have that feeling of gambling on rainbet rather they would look for other casino that supports their currencies and make deposit to that site directly. But however, I know it is a gradual process and they would come to that stage where they would be supporting multiple currencies in the near future just like other big casinos over here.