I think these have quite a bit of scope for BB conversions.
I think that Kroq Gar from the Carnosaur would be great as Slibli.

Whilst the skink from the same kit could work well as Hemlock, however there already are quite a few good skink models to use as him.

Skinks were always the problem as the plastic ones were very difficult to convert, unless you were prepared to put a lot of effort in you were usually better off using the existing BB models.
But I really like the new plastic Terradon/Ripperdactyl riders, they look a lot more dynamic and have some armour, so all you'd need to do is add shoulder pads. They even come with bits to make the special character Tiktaq'to who could be skink captain or Hemlock. Plus you get a toad to use as a marker.

For the rest of the team the existing Kroxigors and Temple Guard can be used.