Hi Guys
Because I know how much these exchanges earn and what are their support level I am shocked, they could provide more guys for support, as well as mostly they don't cover whole question of users and providing answers like government doing in most of countries

About fiat money I would add USD, EUR, RUB, GBP firstly and few others after some time, because project can't stack in one place and should move forward with providing new features, so during some time there will be a no little amount of fiats.
As developer and CTO of other fintech non-crypto startup I can say that programming parts are not hardest part, but most hardest is marketing, I should find some good guys who can do advertisement, as well as good security guys.