I meant depth by the different loadouts you can choose, combined with the different modes. For example, you can build a Lurker that is short-range and fast with Hollow Exoskeleton, Adrenaline Rush, or Acrobatics, or swap speed for higher max health with Heavy Chitin, or for regeneration. You can sacrifice speed for surprise/stealth with Feign Death and Heightened Senses or Cloak, or have a long-range bomber with Enraged Pounce or Shockwave, mixing any of the above set-ups.
These different set-ups make for incredibly different playstyles, and some are extremely useful to the point of being critical in certain game modes like Escape.
Same goes with the other Aliens, with many possible playstyles to choose from. The Marine loadouts are strong as well, with long-range options like the Battle Rifle providing a great counter to the Spitters, or short-range Submachine Gun + Shotgun set ups with heavy armor, or trap-setting with claymores, prox mines, and shock rounds that stun Aliens for a second. Then there are the standard PR's, legendary weapons, and the Smartguns and Flamethrowers around the levels which are very powerful.
I can see there being some Smartgun or Flamethrower traits coming soon, and no one's even unlocked most of the traits yet, I don't think. Kind of call-of-duty like, but nice additions nonetheless.
Lots of possibilities, coupled with some dynamic pieces in the maps and large areas + many modes =
depth. 
Quote from: shakermakerman on Feb 15, 2013, 09:43:25 PM
got it im just playing campane at the moment (and quite liking it shhh )
Lol yes, tell no one. They will wait for you by your car and beat you up.