As you already mentioned earlier, the way even now Takashi Aoki talks about a still nascent in-house team certainly makes it look too premature to have made considerably input for Space Battleship Yamato 2202, even after half-a-year since the first recruitment offers for the jobs commenced. I hope they announce soon more complete staff listings for both upcoming shows featuring animation produced by XEBEC.So to followup on this, apparently Takashi Aoki clarified this on Twitter. This is indeed a new team at Xebec.
https://twitter.com/voyager_vision/status/808468276455972864
It also looks like Aoki is working on FMP. No surprise there. Although I'm not sure if he's leading the new 3ds Max team or even the photography team.