Um, these are MUCH more than simple kitbashes my friend.
Kitbashing or model bashing is a practice whereby a new scale model is created by taking pieces out of commercial kits. These pieces may be added to a custom project or to another kit.
Huh, I've never heard "kitbash" described that way (as limited to only swapping parts from other lines).
Swapping a Duke head onto an Airborne body, for instance.