Yoshi is an MMO guy.
That's his passion.
That's where all of his ideas are.
That's where he's an expert.
He's not a big fan of mainline Final Fantasy.
If SE leadership were half way competent (LMAO), one conversation with Yoshi would have made them realize that he needs to be their MMO guy and nothing else. If he's working on anything outside of FFXIV, it should be their next MMO.