I don't think quality issues was a result of squaresoft merger with enix, things happened before that.
I think they're intelligence dropped when sakaguchi did the movie they got into financial problems which was a godaweful decision.
Then Yoichi wada became ceo... Now I think everyone jumps on the square-enix hate wagon... as they've made a lot of fun games since. But they're not the quality they used to be. But the reason it's this way is because of the assinide desicion to make the movie.
They were considering merging before the movie, but the movie bombing delayed that. It wasn't necessarily wada's idea.
Worst for me is probably activision blizzard. Though I think this is more of blizzard not caring anymore because of the WoW money train... the game I like that they've done is Starcraft 2(Which includes many assinide things in it).







