Simpler times ahead
Well yeah, Hoopa Rings kinda justified the Legendaries in ORAS, even if it was a flimsy excuse with suspicious execution. Sure, Ultra Wormhole travels work even better and aren't such a slapdash excuse and execution, but having both Team Bosses from alternate universes AND legendaries in game kinda is a two and two equals 4 situation. Like I can see this kinda structure working out:Dammit, Mitchman, you sniped my theory! I finally get home to my computer to post what I’ve been thinking about on and off for the past several hours; that the whole deal with the bosses coming from parallel universes in which they succeeded sounds ridiculous, but what if it’s dovetailed with the litany of old Legendary Pokémon? We save whatever is left of those worlds by defeating the bosses, and can return to them via the wormholes in order to capture the Legendary Pokémon they were using. I think that would help to justify such an otherwise way-beyond-over-the-top concept.
-Birds are available in the Seafoam Islands
-Mewtwo can be found in the Cerulean Cave Depths after completing the Scenario and defeating Giovanni
-Beasts are found in the Burnt Tower depending on version with Suicune in either one after trading
-Ho-oh or Lugia depending on Day or Night, found only after finding the trios. Could be Exclusive to US or UM, and the only ones independent of the scenario. Bell Tower Roof or Whirl Islands Depths
-Ground and Kyogre are also version Exclusive. Depending on TA or TM being the bad guys, found in Marine Cave or Terra Cave from Emerald.
-Rayquaza obviously through trading, with the Sky Pillar Altar.
-Regis are independent of the scenario, found in the actual Seafloor Cavern, with their own Chambers.
-Also version exclusive, and actually independent of the scenario, are Dialga and Palkia, on the Spear Pillar Summit.
-Giratina is fought after Cyrus. Twist is that this is the original Pt Cyrus and Giratina, cause he kind of did get what he wanted in the distortion world.
-Same thing for the lake trio as the Regis.
-Heatran is ignored, and Cresselia as well.
-All 3 are only fought after the boss. Zekrom and Reshiram after Ghetsis, Kyurem after Faller Colress.
-Kami's are actually after a small little quest with Burnet.
-Again with the exclusives. Xerneas or Yveltal depending on the version.
-After saving that world, AZ pops up with Eternal Floette as a gift.
-Zygarde is Zygarde, independent and much like SM.
I would much prefer the postgame to being this multitiered content buffet then having legendaries handed to you, and I can't see you gaining access to the worlds they are in just at random. Like, we never saw the bottom screen for travelling have we? Maybe there is some sort of map or guideline screen that shows you how to find the right portal, and you get the info from Rainbow Rocket only.