That's no reason to play the EU version.
Aion classic is a revamped version of old Aion, played when it was still new and again when Aion classic launched and again paid for it. Why on Earth do it for a 3rd time.
People played it when it was new for NA/EU, a lot of EU players started over on NA when GF took over on EU. Came back to NA classic version, making it the 3rd time for a lot of EU players. A lot of players paid for the original 1st years buying it and paying monthly, played F2P a few years, EU players did as well and came to NA when GF took over.
When classic launched, they played and paid again for it and after a while quit, so why repeat this process of paying for the same old game for a 3rd/4th time? GF isn't better at all, it's just (as) worse.