Peadar you have the right idea (how it'll make money as well as sense) and in Poland you're right, and Lithuania and Latvia, though it'd need to be League XI's.
http://www.epfl-europeanleagues.com/...ndly_match.htm
I wanted to get down to this but had just come back to the country and my colleague went. Astrakhan's a hole at the best of times and playing it there was purely down to Gazprom's backing of it, but if it was in Moscow (at Streltsov for example) it'd have brought in 5-8,000 easy and made money on it's own. It was 2nd tier Russia vs 2nd tier Italy and it really did drum up interest and the local lads were close to the pace of a very intense Italian team.
Now let's say that Ireland play the Virsliga (Latvia) XI in May here and in September go over there and play them. It would pay for itself, give players a chance to shine and remember that you'd have our boys going up against half a dozen (a least) senior internationals and would be a marker. The next year it can switch to Lithuania, the year after Poland and so on. This is something for LOI players to use as a showcase and if the FAI/LOI compensated clubs for players going on duty, as well as throw a few quid at the players themselves, it would be great. Marketed and organised well with a set plan for 5 years means it can grow. Not just let players off to be slaughtered by major club sides.