I thought the additional arms xeno looked ok, but this multiple head thing is just a Ray Harryhausen pastiche and not very good.
I really think they're trying too hard to refresh the xeno, when really it's original version has always been the perfect organism.
When will producers realise the terror lies as a combination of the scheming of the company, what we can't see in the shadows and the body horror of human hosting. I think Alien Covenant missed a trick by not revealing a barely alive Shaw mutating into a Queen, screaming for help with Xeno bio-mechnics fused to her body. The series needs more twisted body-horror, not trying to reinvent the alien.