Disneyland's, is scheduled to reopen by D23. Orlando is a different story, but I have a feeling that they may be trying to push for the 48th anniversary date on that one.
As for competing with Star Wars, while Potter will be a good offset,
@Joe mentioned a particular project for USF that would launch before Nintendo, and if Nintendo can open by 2020 alongside or later on in the year after the Osaka version; then it won't be as big of a problem as Universal could have about two things to get people away from DHS.
As for Hollywood, SLoP if they go on a route that I hope they go for, should be something that Hollywood needs.
Hollywood will be putting a lot of money into the Lower Lot before Nintendo Opens, which is actually a good thing as they may follow a similar construction pattern to what was done for the Upper Lot in the period of 2013-2016 but on a shorter timetable.
That said, I am curious mostly on the Hollywood rendition of SNW, but that will be saved on the Hollywood thread of SNW. What I'm curious of in regards to Orlando, is that it is probably going to be the shining gem of any rendition of the original phase; including all three attractions, Donkey Kong; Mario Kart and Yoshi's Island, and that it should help USF out tremendously on a lot of things.
Either way, I am excited to see what happens for the land as we get more and more details for all of the versions.