Regarding the Shadow Cat III, the fluff suggests that the 'Mech is used by Clan Sea Fox.
Should they be added as one of the Dark Age factions the unit is available to?
EDIT: also, a small thing I noticed, if it matters: the new BattleMaster variants introduced in RecGuide 3 (EG: -6C, -6G, etc) appear to use a version of the art without any shadowing, while older classic variants that were up before the RecGuide came out (eg: -1G, -3S, etc) use the same art with shadowing.