Any crypto currency will not be a good solution for poor people cross border payments.
At first crypto currency prices are too volatile. Sometimes you can buy some coins and win but sometimes price can drop. For poor people it can be a significant amount.
Secondly we need to convert FIAT -> DASH -> FIAT. Most of such users will be not able to use exchange platforms. Thus we need some "agent" again.
I don't think you quite realize the plight many people face that live in counties with crap fiat. In veneuzuela, various estimates put the inflation rate at somewhere between 600% and 1500% per annum. You really think Dash will, on average, lose half of it's value every month? If I lived in Zim or Venezuela, I'd take that chance in a heartbeat.
Zimbabwe ran their currency into the ground so hard it is effectively worthless now.
India did a little experiment where they basically outlawed the two most common size bank notes in the war on cash (equivalent to say...10's, 20's and maybe 50's). People couldn't pay employees. People couldn't buy groceries. It was a train wreck.
The Greeks have had their hard earned savings decimated at least twice in recent memory. It's a long list.
I'm telling you, whatever crypto makes it usable on the ground in India, Venezuela and Zimbabwe first will grow their market cap by orders of magnitude. Go watch a couple videos by Andreas Antonopoulos regarding the remittance industry: