The main 'issue' with Exo-Kyns as their own fighter type, is that as far as we know they are normal Squats in sudo 'power armor'; unless they are somehow permanently wired into it (like mini Dreadnaughts or Spyrers?), it would make sense for champions/leader to also be able to get those suits, even tho it might be prohibitively expensive, considering the cred-cost of 'plain' carapace armor.
So, my guess is that these Exo-Kyns will be 'expensive' Specialist gangers (in the 80-100 creds range), that have the Exo suits baked-in their basic cost (Exo suits probably just being Light/Heavy Carapace armor, maybe even treated to offer extra protection from Blaze/Gas like Hazard suits) and access to a bunch of rather expensive weapons/heavy mining equipment.
The big question as to their 'usefulness' will most likely come down to cost and any special rules they may have: as some already suggested, maybe some form of tunnelling deployment/infiltration to compensate for them being melee fighters with Movement 4'' or Pinning mitigation (Immovable would be nice).
That said, in the worst case scenario (if they end up being overcosted prospects like Forgeborns), we could still use the models to represent Leader/champs in actual Carapace armor.
So, my guess is that these Exo-Kyns will be 'expensive' Specialist gangers (in the 80-100 creds range), that have the Exo suits baked-in their basic cost (Exo suits probably just being Light/Heavy Carapace armor, maybe even treated to offer extra protection from Blaze/Gas like Hazard suits) and access to a bunch of rather expensive weapons/heavy mining equipment.
The big question as to their 'usefulness' will most likely come down to cost and any special rules they may have: as some already suggested, maybe some form of tunnelling deployment/infiltration to compensate for them being melee fighters with Movement 4'' or Pinning mitigation (Immovable would be nice).
That said, in the worst case scenario (if they end up being overcosted prospects like Forgeborns), we could still use the models to represent Leader/champs in actual Carapace armor.