I agree with most of this post, just have a few comments.
Yup, no reprint for Artillerist or Battle Smith.
Probably right. Armorer kinda splits the difference between the two, while Alchemist is wholly different from the more combat-focused subclasses.
A slightly revised - if only with an extended equipment list - version of the Battle Rager is due.
Disagree. I think WotC see setting books as a different kind of thing, and will reprint subclasses from those books quite quickly - they did with swashbuckler.
Order reprint pretty certain in my opinion - see my earlier comment. That goes for Circle of Spores and Oath of Glory too.
I think Parmandur may be onto something about reprints, though. I was considering the race reprints, but racial options are much more important to setting or game identity that subclass options.
I think this will be a whole chapter, not just ranger.
Yeah, me too. I just wanted to call out to it here. But I imagine it'll be either spread throughout with the new subclasses or it'll be listed on its own with the subclasses a separate chapter.
I'm not sure that Wildemont content is likey to be reprinted as it is 3rd party. It would require the spells reprinted as well.
While Mercer didn't take resources off of other WotC projects like Theros to make Wildemount, it's not 3rd Party. This is a 1st Party book deal negotiated with a 3rd Party. You can see it more like Spider-Man in the MCU, and the deals Disney had to make with Sony to make it happen. Is Civil War a 3rd Party Marvel movie? Is Spider-Man: Homecoming one? I'd say no to both, but I would say Venom is 3rd Party. Similarly, Exandria as an IP is owned by Mercer, and he's worked out deals with Green Ronin (Tal'Dorei) and WotC (Wildemount), but the mechanical content in Wildemount is owned by WotC. It's why he can use the 4e Deity names in Wildemount but not in Tal'Dorei, and why conversely he can call his Draconia-descendant Dragonborn "Draconians" in Tal'Dorei but has to call them "Draconbloods" in Wildemount - because "Draconian" has a specific brand identity to WotC that, per Dragonlance, does not match what Mercer has in Exandria.
To that end, while Dunamancy as a concept is very much a Mercer thing, Graviturgy and Chronurgy are broader ideas than just Critial Role (Gravity Mage and Time Wizard in various fantasy IPs). I could easily see these and their unique spells being reprinted in the future, I just don't think it'll happen in the same year the Wildemount book came out (likewise for any content from Theros) - ASSUMING reprints of class options are still a thing in WotC-land. It could be a changed policy. Maybe we got upset about reprints enough that they don't plan on doing it?
I'm not sure when a la carte was introduced, but there haven't been any Subclass reprints in close to three years now. Race options in Setting books, but no Subclass reprints. I don't think that is a coincidence.
This is in discussion to both you and Paul Farquhar - I'm not really sure about which side I'd fall on this front. But I think there's something to be said about reprints that we haven't touched on yet.
I originally sparked this question because Theros ended up not reprinting Forge and Grave Domains. There's a good possibility that the reason for this is that Theros, Wildemount, Eberron, Ravnica, and any other settings, they can reliably assume you have at least one or more of the splatbooks in addition to the core rules. Yes, Wildemount reprinted content from VGM AND MTF, but notice that they reprinted from both of those, not just one.
If I were a DM wanting to limit sourcebooks in a non-AL game set in a published setting, I'd probably allow Core+Setting+1. This is as opposed to AL where Core+1 is the rules of the game for character creation. Therefore, any FR sourcebook MUST reprint content that is necessary for the story it wants to tell, because AL will prevent the player from using both those options and Xanathar's, etc. But other settings do not have that limitation. And if I was going to approve an additional book to the PHB for characters? It would probably have to be Xanathar's Guide. The other two have races, but races are much more likely to show up in the setting book if needed. But Xanathar's Guide is sort of a BIG DEAL expansion to the game options. It's sort of in a different category than VGM or MTF.
This is also why I'm unsure about a Xanathar's 2. Can we assume that it'll hold a similar important niche in the game to Xanathar's Guide? Can we assume that games will be Core + X1 + X2 + Setting book? I'm unsure. But MOT certainly seems to assume you've got XGE, as does GGR.