They would never go out and help other humans (except Goris, but this in an exception)
Intellingent Deathclaws had no reason to be in Fallout Tactics, (...) before the Enclave starts their experiments with Deathclaws.
Deathclaws as followers have been suggested and neglected many times before, no reason to argue about again.
How about smaller animals then?
What about robots? Could have a RobCo factory in the wastes? It could be something quest related like bringing selected stuff and caps to build a robot. Like lots of metal parts ans FCC for example.....