Lancelot
Adventurer
Monster Manual 2 - more than anything else. And yes, I know there are 3rd party monster books out there now. And no, I'm still not going to buy them. My interest is in the official treatment of classic and specific D&D monsters (demodands, kopru, aurumvoraxes, froghemoths, etc), with WotC's production standards and artwork.
Deities & Demigods - focused on avatars, domains, rites, rituals and holy places - not stats for fighting the gods themselves. I legitimately enjoy reading the old 1e and 2e Deities books, simply for their "take" on real world pantheons. Especially the slightly more obscure ones: Finnish, Nehwon, Athurian, Aztec, etc. We all know what Thor looks like, but I'm interested to see an artistic depiction of Ukko, Issek of the Jug, Sir Breuse Sans Pitie, or Tlazolteotl. Especially Tlazolteotl.
Planescape - anything Planescape. Manual of the Planes, Adventurer's Guide to the Planes, Fiendish Compendium, module compilation, maps, Fiend Folio supplement, whatever. If it's Planescape, I'll buy it.
B4 "The Lost City" - updated for 5e and given the whole "Curse of Strahd" treatment. 256 page miniature campaign setting and levels 1-12 adventure path, covering the full 10 levels of the ziggurat and the underground cavern of Cynidicea. Also, Zargon as a premium huge-sized mini.
Deities & Demigods - focused on avatars, domains, rites, rituals and holy places - not stats for fighting the gods themselves. I legitimately enjoy reading the old 1e and 2e Deities books, simply for their "take" on real world pantheons. Especially the slightly more obscure ones: Finnish, Nehwon, Athurian, Aztec, etc. We all know what Thor looks like, but I'm interested to see an artistic depiction of Ukko, Issek of the Jug, Sir Breuse Sans Pitie, or Tlazolteotl. Especially Tlazolteotl.
Planescape - anything Planescape. Manual of the Planes, Adventurer's Guide to the Planes, Fiendish Compendium, module compilation, maps, Fiend Folio supplement, whatever. If it's Planescape, I'll buy it.
B4 "The Lost City" - updated for 5e and given the whole "Curse of Strahd" treatment. 256 page miniature campaign setting and levels 1-12 adventure path, covering the full 10 levels of the ziggurat and the underground cavern of Cynidicea. Also, Zargon as a premium huge-sized mini.