well i have a tendency to except things, even when most people don't, usually, but in the case of the lord bio, lets just say they did put about 10-15 minutes into the concept and story of this bio, and maybe this "ancient" bio is from a much more primitive form of their culture, either when they still hunted primarily on their own planet (i.e. the mouth-less portion, yes i know it's been done, but you wouldn't need a breathing aide on your own planet) or they simply didn't have the technology at the time. but it looks like the front part of the mouth portion is mimicking the predators lower mandibles (obviously with little extra spikes poppin out, which they totally could've done without) like how the samurai had their face mimicking mempo's. it just looks more like a part of "warrior" armor rather than "hunter", which I'm sure is how pred culture started, fighting among other pred clans, eventually leading to their lust for hunting. anyhow I'm not saying i LOVE the lord bio, but i've kinda excepted it, a little, and I'm not trying to give them too much credit, I'm sure i just dug way deeper then they ever did, but for an "ancient" bio ADI was 10 times more creative with AVP's elder bio's no question.
now the "spartan" bio, yes it's about the least predish of all of em, it almost looks like the bio's from the new comics, that and perhaps this hunter has done battle with a spartan or two in the past and saw them as worthy enough to form a new bio in honor of such worthy prey, mainly the split mouth portion,(which i didn't even notice till i zoomed in on it) but it's the basic shape of the opening in a spartan helmet. anyway i can again appreciate the concept, but the shape is quite "off". still dig it, and wouldn't mind being able to choose it, if i could ever play enough to get it unlocked!!!