Scizor deals with Lurantis the same way Lurantis deals with Scizor: By attacking it. I know it sounds silly, but considering that a lot of Lurantis variants have been teching Eeveelutions and the fact that Scizor can not only do the same, but can effectively tech Garbodor to counteract Flareon, I don't see how that's much of a problem. It becomes an even match-up with the exception of, as you mention, Spirit Link interactions, and even then, you still have a better time against the Meta than Lurantis currently does (Lurantis doesn't have as good a match-up against M Mewtwo Y as Scizor does, for example). Though, I will say, Garbodor isn't exactly the strongest card anymore, but even without it, you can still tech Eeveelutions and other things, etc.Field Blower while great is a two way street. As a Mega evolution player, you won't be able to just slap down your precious Spirit Links turn 1 without risking them and potentially losing a turn of momentum. Dhelmise definitely helps tho. I think if Sylveon GX kicks off to some quick placements, Mega Scizor may be our sole steel champion. Outside of that I just don't see how Scizor efficiently deals with the expected influx of Water and Lurantis variants.
I will admit that Field Blower, Choice Band, and Tapu Lele will undoubtedly affect the format in a way that will be hard to predict. There are almost too many seemingly good decks to pilot. Exciting times ahead!
Quad Lapras only becomes a problem if you don't set up properly. You can be slower than them and still win, mainly because Lapras has to GX Attack in order to effectively 2HKO you (or rely on something like switch shenanigans/Pokemon Ranger plays, both which are inefficient if you really think about it). Other Water Pokemon that are typically used in Waterbox itself are, well... weak to Metal, meaning they aren't as big of a problem, so long as you tech in Pokemon Ranger yourself. The less the deck attacks, the better.
Raikou is still a surprisingly good deck and Vespiquen/Raichu was doing pretty well in the Latin America Regionals earlier today. As far as Fighting goes, Zygarde is still our best bet at the moment and the new Stadium does help the deck... kind of. That said, I'm sure there's a Stage 1 Fighting Pokemone that should be a lot better now that we have said Stadium or, if we stay in an EX-esque Meta, we could see Garchomp make a comeback in some regard. I think the deck is, at the very least, a solid Tier 3 (at least when I played it, it seemed like it).I will happily eat those words if it happens. My motto is the more viable competitive decks the better. Would be nice to see a lightning deck come out of GUR as well, but that's probably asking too much. Would be nice to see a top tier fighting deck emerge as well.
I think Tapu Koko GX is pretty good as well, but I do worry about how strong it actually is. I don't think its enough to warrant a Tier by itself any higher than like... 3, but... we'll see. I do hope that things do change, however. I am kind of tired of the same decks over and over.
-Asmer