I honestly hope to God they -don't-. Almost every instance of them significantly changing things have let to massive QA issues, from the stamina shard shenanigans around 4th dungeon update, to Wakka's MC outright crashing the game for a good while, to "oh wow Global exclusive event" having obviously incorrect XP figures.
Only event that's significantly shuffled was FFXIV, due to the cross-marketing potential. Other than that, they nixed the cross-promo events and SHINRA, and that's about it, I guess.
I mean, yeah, I'd greatly appreciate a more tailored experience, but it's quite clear the manpower isn't quite there to maintain the level of polish that's expected out of DeNA and/or Final Fantasy branding while making too many locale-specific changes.