As for the poor countries obligations, if they can't pay people, they can't pay people. What good is printing more useless money anyway.
The "good" is that it allows them to confiscate funds from the populace via inflation (which is really really bad; but they keep on doing it)
Yes, but then no one will keep their money in that currency anyway. People in these poor countries will keep their money in usd, euros or whatever.
By being the 1st country to do this, there's a good chance the bitcoin price will keep going up and they can even pay their workers less money as time goes on.
If they pay their government workers in their own currency, they have to keep giving them raises to keep up with inflation.
Yes, they won't control the money supply, but what's the use of printing money that no-one uses. Their economy would be better off and if all major transactions were done in bitcoin, less fraud, faster transactions... I'm not saying every small country will want to do this. It only takes 1. Or it could be a city that has it's own currency.