It's quite possible that the Raider will be revealed as the Inquisitors command ship in Rebels. It would also fit thematically if he is a named pilot (or Inquisitors as super-elite generics) due to the Advanced being included.
The release of ships tied into Rebels could lead to the Ghost and Phantom, with rules for small ships docking with their larger motherships. Which, in turn, could lead to the Hounds Tooth for S&V, with Bossk's Z95 having similar docking rules.
This may even pave the way for a Gozanti with carrier capacity.
I hope things pan out as above. I think it would be too early to have the Raider as a teaser ship from Ep VII.
Edited by 0Dark