Indeed.
No, actually. The Scorpion Alien does resemble the basic warrior, but with the addition of various cosmetic spikes across its body.
John Malamas made an amazing custom version a year or two ago using the Pressure-Suit Engineer body as the base to I've the creature more bulk in comparison with a normal warrior. Maybe NECA could do something similar for a future Gorilla Alien.
Huh. I never really thought of those spikes as an ''added feature''. Maybe because at the time I was less aware of the exact details of the movie design.