The Thai economy positively dwarf's that of bitcoin - so what sort of crazy definition of 'obscure' are you using?
Ask any one of those horribly suffering under the overloaded use of $ whether they have heard of the Thai Baht. Ask them to point out where Thailand
is. The continent at least.
Before you twist my meaning, I'm not saying the country is obscure and its economy doesn't exist. I'm saying the average person in the target audience has no clue and won't mind.
If as you say Bitcoin remains as insignificant as it is now, then it's not going to be a problem. If it grows to a stage where it will be, then people will know to look for the context, just as those horrible sufferers manage to now.
In the meantime, Bitcoin isn't hobbled by yet another artificial hurdle.