Well... this is getting redundant now. But I'll add a little bit more...
The eggs that opened near Newt and Ripley at the end of the film were in close proximity to the Queen. The Queen could have 'ordered/told' those eggs to open.
When I said colonists being kept elsewhere, I didn't entirely mean 'elsewhere'. Hudson saw all the colonists in one area, yes... but he also said IIRC "All of them, I *think*". He may have not scanned the entire facility, and didn't bother to scan the rest when he found the vast majority of them there. But you did tell me you believe there were other colonists who may have given birth to other aliens, even if they were all in that area. That sector seemed to be pretty big. I assume this because all the colonists are supposed to be there, yet how many of them do we see? So the area was probably big enough that all the colonists weren't necessarly killed in the first battle. I don't personally believe this though. But... by your own admission, the aliens took days or weeks to actually use some of the colonists they captured as hosts. The "ALIENS" "Cocooned Woman" was still alive when the Marines arrived. For whatever reason, she wasn't used by the aliens until later. So, Apone and Deitreich might not have been used as soon as they were captured either. But.... it's obvious in ALIEN it took a good few hours for Kane to be impregnated and for the Alien to become full grown. In ALIENS, after Detreich and Apone are taken, there's maybe only 6-8 hours before the Queen ends up on the drop ship. There might be a few holes in what I'm saying here, but the point is it's very possible a chestburster could be in existence while the Queen is fighting Ripley and Newt.
It doesn't matter if there's no evidence of a chestburster. This chestburster is basically needed for the theory to work, because in your theory the Facehugger gets off the dropship, crawls through the Sulaco, and ends up in the cryo stasis room. That implies it opened a bunch of doors.
I will admit now that the Queen could have TOLD the egg to open shortly after she laid it on board the dropship... meaning the Face hugger could have been outside of the egg before the Queen was sucked into space. But it still would be trapped on board the dropship.
BUT.... this re-raises an old question. Why wasn't this egg and face hugger sucked out into space with the Queen? Even in my theory, the chestburster and egg should have been sucked out.
So, still NONE of it makes sense.
FOX clears up a plot hole by creating a Blu-Ray menu? It shows just how bad the situation is in the first place that they admit to this plot hole. It's even more pathetic that they try to fix it with some meaningless menu screen. Their "fix" still doesn't work because the egg should have been sucked out into space. Yet, when it comes to this at least, my Bishop theory still works. The egg was contained closed in an entirely different room, and thus was not sucked out. This implies that there were in fact doors sealing parts of the Sulaco off from other rooms.
In any event, if there were no doors between the dropship area and the cryo area, most/all of items onboard the ship would have been sucked out into space, unless they were held down. So there were clearly doors sealing off the ship, meaning your facehugger had to open these doors and crawl though the ship.
I'm still going to go with my chestburster theory. I'm gonna believe that Ripley hit a button to close the dropship as soon as the Queen came out, thus nothing would be sucked out (Hicks was also clearly sealed in the dropship). But you can't use this explanation for your theory, because that means the facehugger had to open a bunch of doors.
