Yeah, we should have them. The loss of the specilaized infantry hits my games hard, I tend to play a lot of combined arms games and specialized troops were a lot of fun. Very disappointing.
Was also no problem to adapt them to the faction- I just took 10 (or whatever fits the type) troopers as contubernium and worked from there. Was really no biggie- the loss is though. I will ignore that for my games, makes no sense to have no paratroopers, frogmen or combat engineers.