Im one of those who enjoyed the multiplayer (the solo campaign not so much) and believe i got up to the maximum level playing as the xenos. While it was a let down in all departments, and had many flaws, the online section drew me in, and i got some ridiculous killing sprees.
I remember feeling the same for segas 2010 AVP - it Had its flaws, but still, i played the crap out of the multiplayer and still to this day get a few of my online mates together to have a couple of custom games in the pyramids.