I havent played any AVP game since that one back in the mid 90's, but I think a real detriment to the series *is* it's camera system.
Shoot, I remember the fish-eye lens for the aliens and it was a real wretch-fest with all the different angles.
For the next go around, maybe have a 3rd-person/over the shoulder view. As the aliens, it would still give you the ability to climb all over the place and stay in crazy contortions, but the camera's orientation wouldn't destroy your equilibrium.
Even with that, Im not even sure if the game's premise is still viable. Two of the factions engage in ambush warfare, and one of them is built like a tank, the other is a friggin ninja with acid blood.