I'm OK with him doing this game.
As long as it's not Ito....Ito needs to be in charge of XVI!
Ito's last project started in around July 2013: http://www.neogaf.com/forum/showthread.php?t=633101
RPGSite said:RPG Site: I can see Nomura-san's crew need the room back for their next interview, so I'm going to wrap up by betraying my inner fan and ask a more specific talent question - Hiroyuki Ito, the creator of ATB, the director of FF9 - my favourite, which of course you produced - and FF12... Is he still at the company - and is he working on anything that we already know about?
Hashimoto: [laughs] You're a very unique journalist, asking about Ito-san! Yeah. He's still at Square Enix. He's been planning and doing some proposals for a new project at the moment, so... Really, he's the kind of guy that wants to challenge new things all the time, so, yeah. At the moment, he's doing... [laughs] He's putting some ideas together.
RPG Site: I'm very interested to see what he does next. For RPG gameplay systems I really do feel he's one of the best there is; one of your strongest assets.
Hashimoto: Like you say, he's very talented and very involved. He's very, very in-depth... he likes the depth of the gameplay systems side of things. He really loves to go really deep on mechanics and things, and that takes time. I'm very excited to see his ideas soon!
I wonder when Mevius actually started development. If we're talking about a project that was just dreamt up and proposed by Ito himself, I feel it's probably not on the scale of a mainline Final Fantasy, and a year and a half would likely be enough time to get it to a showable state.