for me it is the sudden 'westernising' (pretend thats a word) of the newer FF games. Instead of keeping the FF games how they were with minor tweaks...they went and created that abomination that is FFXIII which had nothing in common with any of the older FF games besides pretty characters, it isn't worthy of an FF title.
Stop trying to copy the western RPGs SE, stick to what you know and do best, turnbased FF RPGs
Funnily enough, the only way you'll play a "raw" game with no twinks is to buy one straight from Japan.
With XIII, i don't think it was westerners that spured SE to build the game like they did, i think they were just getting too over-confident in their game-creating abilities, afterall, they have pretty much made over 10 turn-based RPG's.
All in all, what i'm trying to say, is that they've been making turn-based for so long that they completely fucked up when they went to try make something different in terms of mechanics.