IMO P1 and P2 hold true to the name of Hunters/Predators.
A: They Stalked their prey (we do it, tigers do it, lions do it etc.)
B: They attacked when they new they could get a clean kill (we do it, lions do it etc.)
C: They didn't kill the sick or the weak (unarmed, pregnant or sick), most other Predators/hunters take advantage of that.
Right! They should stick to that. The Predator was introduced as a Hunter, leave it like that.
Most of the creatures hunted by the predators are animals. Humans may be the only "intelligent" life form they hunt. Physically, we're no match for them but we can plot ambush and set traps just like them. That should be their challenge, a creature inferior in strengh (often underestimated) but able to fight back with equal strategy.
Hunters don't play mind trick or emotions on their prey. That is more fit for psyco-maniac-killers.
I welcome truce between predators and humans when common goal adds to the equation or if it's convenient at that moment. They are an intelligent species, able to be reason with to a certain level. They are very, very, very technologically advaced, but primitive at the same time. Tribe like, which means they most prove worthy to earn respect. If they value respect, they should hate betrayal; and they do, I read a comic about that. So turning on the one who just helped him, whether he likes it or not, would be betrayal and unworthy.
Take for example the movie Apocalipto. The leader vs the skinny crazy one. There you can see the difference between the hunter and the maniac killer. I don't like the idea of a Predator behaving like the crazy one, it would make him a bad blood.
Some posted about an Elder hunting 3 badbloods, etc., now that is more like it, it'd be a dream come true.
Continuing with the Apocalipto reference, the leader vs the main character. Would you think the main character could defeat the leader in physical combat? no way! That brute was a true bad ass, but ended up killed in a way that could be consider stupid, after seeing how great he was at the begining of the movie. Very similar to the way P1 was wounded by Arnold. Two great warriors killed by inferior adversaries... big mistake mixed with bad luck. As they said in P2: "**** happens" So no matter how great you are, when you're dealing with an equally intelligent opponent, anything can happen.
I like to think these new predators were still in training or "defective". It's the only way I can abide what happen.
Honestly they shouldn't make a sequel. I would prefer something different. It is like the never ending story unless they can escape from that planet, but really, how would they do that? They can't be rescued by humans, so what then, wait for another predator to be tied up and then rescue him so he send them home, come on!
Now for a twist ending, how about the crazy "doctor" played dead (before you know he's the maniac), then let Royce and Isabelle take care of the predator, then paralize before killing Isabelle and and Royce (you find out he's a crazy maniac), and when he's maniacally laughing, his eyes become wide open at the same time he stops laughing, then you can see he's been impaled by an Elder who toss it to the ground disgusted and then fed the dogs with him as he looks up to see the parachuetes descending. Bet that would leave people with their jaws hanging.