I swear, converting the fleshborer hive into a giant scything talon was originally a joke. In hindsight, the arm is about the right size...
Let's tack it to an exocrine torso, and see how things look
Okay, there's potential here. The tail is far too small, but the torso and limbs look about right.
I hacked apart a tervigon leg, in order to get the beastie a bit more crouched. Things are looking somewhat crowded, limb-wise.
The headless 'fex in the background looks ambivalent.