Interesting.
It seems you'll need a licence if you provide any kind of crypto service - from custody to exchange. Makes sense.
However it doesn't cover some very common cases
1) Getting paid in crypto (as a business entity). Will you need a licence to issue invoices in USDT? Or BTC and then converting proceeds in USDT? Unclear.
2) Handling the crypto assets (storing, exchanging etc). For instance you accept payments from customers in crypto, however the service takes 3 months to be delivered, so you basically store the customer funds for 3 months. Does it require a licence?
3) Paying the employees in crypto︀ (buying USDT, storing it for some time, sending payments).
A lot of grey areas and︁ as usual very little use cases - it seems in Dubai everything is made as︂ opaque as possible in order to please the global partners and at the same time︃ to calm expats with questionable capitals.