A bit odd that there's this whole compound of inhumans led by skye's mom who seem to have no connection to any of the inhumans from the comics other than having access to terrigen mists and knowing the history. maybe it's like rotc to the great refuge's army.
Well I can see a few reasons why they'd have little to do with the In humans from the comics, story reasons and not just the we don't want to do the special FX and costumes for those characters on a TV show budget or we haven't cast Black Bolt or Medusa for the movie yet sort of reasons
Part I think is that almost all of the compound, with a couple exceptions, they're all potentials. They haven't been exposed to the mists yet. So that puts them on slightly lower social level. While exposed to some of the Inhumane history, they haven't been told of everything, which is why they're in a remote compound instead of Attilan itself. They are being educated and evaluated on if they can allowed to join the Inhuman city proper.
And I think more importantly, most of the comics center around the royal family. They don't just mingle with anyone, inhuman or not. The royal family just does not mix with the common folk. I think it would at least be neat to have Karnac show up to represent the "Elders" that were mentioned. As he would be the most non effects required character from the comics.