When it comes to Ripley and people screaming "enough Ripley", my response is that there's six films with Aliens in, and the four best ones have Ripley in them, the implication being Alien and Ripley need each other.
The reasoned response to that is 'just because the existing AvP films don't work, doesn't mean they couldn't in the future'. Which is completely correct. There are ways to get the balance right so the respective franchises aren't weakened (something like the first comic series would work). The first major obstacle is the title. It does reek of desperation, not to mention it screams "cheap". It sounds like a boxing match. I'm not sure you can get round that, which means it would be up to the actual content to elevate the title.
Well, if you are right then I guess that the franchise is pretty much dead already. I personally believe that it isn't and Alien no longer needs Ripley, but I guess Covenant's success or failure will be the true Judge of that.
Even if it did somehow work (which as I previously said I doubt that it would) I'd still be against it because of my detestment of the idea.
Because I feel that film crossovers not only reek of desperation, but often serve to only further weaken there respective franchises.
The comics didn't.
I was speaking of film crossovers, not comic ones. I have no problem with the crossovers as long as they stay in the extended universe.