Seriously. Take the Ceph trooper, keep the central part of the body, turn the tentacles in to more solid grasping limbs kinda like the Tripods in the abysmal War of the Worlds remake, have them walk around like quadrupeds if you must, and boom. You have an enemy that is similar enough to the original while still being able to take advantage of the ground tactics the Ceph portrayed in C2 that Crytek was so proud of.
And instead of the awesome matrix bot-looking Gunship/Dropship, we get Bicopter gunships that look like they belong in Bladerunner and what is literally the worst design for a Dropship or Troop Transport I have ever seen. It boggles the mind.