I enjoyed AVP though it`s not the preferred way I`d have like to have seen the first film of the two species together.
I know it`s unoriginal but I`ve had LOVED to have seen AVP be based on the original Dark Horse 4 part comic. Now that was a fantastic story & certainly would have set up the franchise a lot better IMHO.
Add you`ve also then established the AVP in the similiar timeframe as ALIENS,so your letting so much become a possibility instead of the way they actually went.
Also the key thing to remember in both ALIENS & Predator movies,humanity is the winner neither of the monsters.
Though a Pred movie with the Pred winning,then moving onto his next game, that would be interesting.
Whilst the Alien wise,maybe human`s surviving as rats & the Aliens are the Dominant species.
Still as said I did enjoy the AVP movie & I`m truely looking forward to seeing AVP-R,this really could do so much more justice for the whole AVP franchise.