Oh, Sinnoh remakes? Sure, let me find my walls of text I've posted before about it
I'll try to sum up some points I've made about this subejct in the past:
The original remakes (FRLG) are now the most outdated games (and some of the main reasons for those games being made are now not valid anymore for making other remakes), so it's starting to beg the question about this whole approach continuing like clockwork when it's obviously in need of some change.
I love Sinnoh! Which is one of the biggest reasons I don't really want a DP-remake. Because if they make one "now", it would probably be the same copy/paste-kind of remake we've seen before, rather than actually expanding and building on the originals with more creative freedom (I don't want the same NPC standing in the same corner, and have gym rosters copied from DP, while the game pretends Pt never existed and then merely makes up for it with a "Platinum episode" and a sign that says "lol Battle Frontier soon, surely". (Also, don't hand us a free Lv30 Heatran with a Mega stone halfway through the story...ok I'll stop. I did enjoy ORAS a lot, in case anyone is wondering. Doesn't mean I can't see flaws.))
So optimally, I would want them to wait with a return to Sinnoh until such time that the actual DPt-games will return themselves via e-shops, because in that case, gamefreak will be pretty much forced to do something new with a new Sinnoh game. Whether that'd be a sequel, or sort of a more bold re-imagining of the games with tons of changes...just anything but formulaic remakes, like the ones we've known so far. (I think the more logical path to that stage is probably if they re-define the "remake" concept with a more radical return to Kanto first (a combined RBYGSC-sequel that includes Johto as postgame, so they cover both for a good while?)).
Gen7 is shaping up to be free of purely nostalgia-milking entries (just SM and USUM?)...but that said, I do see some curious connections behind SM and DPt.
-The mascots of SM turn out to be capable of opening portals to strange dimensions
-The Ultrabeasts and the whole Ultra dimension idea, although separate from Giratinas Distortion world is very reminiscent of it (I mean, Ultra beasts are essentially the answer to the question we've been asking when Platinum was new: if there was wild Pokémon in strange dimensions, what would they be like?)
-as well as the designs of the Ultrabeasts themselves. They all look like recognizable real-world features reassembled in a weird way to make these creatures... just like the Distortion world seems to be made out of real-world elements, but put together in an unfamiliar and illogical fashion.
-and there is of course the obvious Type:Null/Silvallys blatant Arceus references.
And I feel like SM taking this route now actually opened some interesting potential for Sinnoh-sequels. We could get to explore not just the Distortion world more thoroughly, but other strange dimensions as well. And encounter a bunch of completely new Ultrabeasts while at it? We could find out what hapened to Cyrus...perhaps something similar to Lusamines fate? And with the advent of Alola-forms, we can fresh Sinnoh up a bit by giving some blander Pokémon "Sinnoh forms" (Ice/Flying Noctowls at night to make the region actually feel a bit cooler anyone?).