Everything after 2 is speculation only and now with further rumors that a stand by line may be allowed to form and be drawn from for entry even during period #1 throws another wrench.
I wonder if there comes a time when too much speculation goes beyond the line of planning and becomes counter productive as it causes stress and worry when no one can do a thing about it. At this point the only thing someone can do in the off chance hope it will make their visit any better is book onsite as there could be continued opportunities for that to benefit a guest as well as just keep their ear to the ground for new information. But apart from that - offsite guest reservations, stand by line, when ROTR will open, how large crowds will be, when will FP be offered etc. - all pure speculation and while some of this speculation is based on sound logic and reasoning - that is all it is and people should take all of it with a large grain of salt.
I think it is fair to say though that you will never reach the point in the list of stages above where one can enter DL at 10AM at a leisurely pace and walk onto rides in SWGE - not unless it's zero degrees and a blizzard, in which case Canadians will just take over the parks.