There will not be a compendium of the Thematic Toolkits, but they are being gradually absorbed by the Multiclasser's Manual line.
Right now, this is the list of smaller products absorbed into larger ones for PMG. You'll need to ask other creators for their own lists.
MoAR Complete:
- MoAR Wilderness
- MoAR Intrigue
- MoAR Light & Dark
- MoAR Battlemages
- MoAR Elements
- Hymn of the Hinterlands: The Harpy Heritage*
*Hymn of the Hinterlands is Josh Gentry's release; it's the only thing from another publisher that's been fully incorporated into a PMG release.
Multiclasser's Manual, Volume 1:
- Arcane Sniper
- Confidence Mage
- Field Agent
- Fiery Justice
- Mortalist
- Spiritualist
- Thematic Toolkit: Venomous Shadow
Multiclasser's Manual, Volume 2:
- Thematic Toolkit: Arcane Avenger
- Thematic Toolkit: Cultist
- Thematic Toolkit: Scrapper
- Thematic Toolkit: Judge, Jury, and Executioner
(These lists are also on the product pages for the larger releases)
The Forgotten Vault: Unlocked (upcoming):
- Spells from the Forgotten Vault
- Utility Spells Redux
Also, just to address the natural follow-up question of "okay, what else is going to go into a
future collection, and when?" I don't have firm answers for that. PMG is very much a side hustle to me, and I generally start doing my planning in earnest for a large release a short while after finishing the last large release. If I'm
really feeling ambitious, I might plan two releases out. I also am usually
much more interested in the new stuff and plan that first; incorporation of old material comes later in the process and going forward, I can say with confidence that old material will always been less than half of a large release like a Multiclasser's Manual or Forgotten Vault product.
One other thing I
can tell you with near-certainty is that System Architecture: Motif Classes isn't going to be rolled into anything else. It was a three-way collaboration and I don't want to deal with the math for the royalty sharing on that if it were to be absorbed into something bigger. It might get a visual upgrade one of these days (I have gotten a lot better at graphic design since January of 2023!), though - but if that happens, existing customers will get the new PDF for free in their downloads.
Other smaller releases like this line, Sinuous Sentinels, and even Benefactors & Guardians? Those
might wind up added to something bigger someday, in whole or in part, but I make no promises as to when, what else anything will be rolled in with, what it will cost, etc. I tend to put together new product ideas based on what I'm interested in or (sometimes) what I can see a tangible demand for. Neither of those are things I can really anticipate very far in advance.