I bought a RetroGamer magazine the other day which talked to the developers of Panzer Dragoon and Rez, there are some crossovers from what I read (Rez staff talking about Panzer Dragoon fondly) so I am guessing most of the staff went to UGA after Panzer Dragoon and then to SmileBit after that (what few members they had left), the whole team was split into many different companies/divisions (Artoon, Q Games, AM2 (Shenmue), Nintendo etc).
There aren't many guys that went to SmileBit it seems...
The information was very interesting to read as it has a "Where are they now?".
Out of the five major dudes who made the Panzer Dragoon games, only two are still at SEGA (AM2 and AM7 respectively).