As I see, Predator
-> Predator 2
=> Predator 3
->Predators
Predator 2 and Predators doesn't contradict each other. Also NA said P2 is not thrown out the window. Still, Predatos is not meant to be Predator 3. RR pretty much expressed he wishes to see it as something that could have been made as the first of the series. As I see, it's illogical to call a movie then the fourth, when the third doesn't exist. Why would Predator 3 say no to predator 2, when they cannot contradict each other at all in the way of numbering. The only problem could be with Predators, but when it is not Predator 3, it's just pointless to call something the 4th.
I think a new part of something comes with new turns all the time. Unless it's total bullcrap, it necessarily brings up new ideas, concepts, preferably good ones. Though since Predator, we haven't seen anything that could've made everyone go like: 'that's exactly what I wanted it look like!'. There are debates about predator 2 (unnecessary ones imo), predators, not to mention avp movies (which btw I don't even count in now, they aren't 'predator' movies). a movie with the number 4 would suggest for me 'okay, we reached that number too, let's skin the motherf**ker once again'. For me this says what you told:
Quote"Well, another predator, nothing new."
Suggests a constant downhill. No ideas but just a movie for more income.
Three as a number is symbolic. If Predators is really a 'step towards the good path', as so many reviews said as conclusion, and as people like it to referred to, it'd be simply a huge slap to call its sequel Predator 4. Like just another skin hung out, drying, waiting for the flies to come...
Btw If it must have Predator as title, I'd like Predator 3. best would be Predator and a brutal sub line.