Heres how it should go to warrant a great successful Alien movie/sequel.
1) A direct sequel to ALIENS
2) Don't reference A3 and AR for storyline purposes
3) Don't reference Prometheus 1 and 2 as it wasn't widely received well by the general audience
4) By not referencing A3 and Ar doesn't mean your retconning them but for strictly storyline purposes only so everyone wins if they liked those films ( I'm one of them myself). Similar to how Predators was a direct sequel to Predator but it didn't reference Predator 2 for storyline purposes but it doesn't 100% ignore the film either according to the director himself Nimrod Antal.
5) Get Sig and Beihn back to kick some Alien ass in a awesome new storyline as exactly what the concept designs showed. Have them fight Queens and other types.
6) Somehow get Weyland-Yutani invalid as enemys that Ripley and Hicks also have to deal with in the middle of the aliens
7) Throw in few androids as well.
The film should pick up were Ripley Hicks Bishop are in the drop ship, Newt unless they will replace the actress because she probably won't come back and they end up leaving Newt on Earth and then flying back to a different colony that was also infected with hundredths of eggs and xenomorphs all increasing in this infestation. knowing the info at hand Ripley and and Hicks want to wipe them out together. As well as Weyland-Yutani already there as enemys scavenging the area as they know what happen to it. For whatever reason and something happens to the ship and Ripley and Hicks Bishop can't return to earth. For storyline purposes they have a lil more ammunition then in the end of Aliens but have to create a lot more in time to survive this threat from the xenos. This would be an AMAZING Alien movie. You just need a script along these lines. The Key here is strictly a direct sequel to ALIENS as ALIEN and ALIENS had a great thing going for it. In the end your not retconning anything even the ACM game for the sake of fans not liking it but simply just not referencing them for storyline purposes.