I am also primarily focused on Western makers of late: Kippington, Timothy Johnson, and Isasmedjan, plus maybe Catchside or Halcyon Forge if I found an irresistible deal. However, I'm trying to stick to my "don't spend over $350 on any single knife" rule.
I've become more interested in stainless/semi-stainless alloys lately: AEB-L, Nitro-V, NioMax (any maker using it yet?), CPM 154, and possibly Z-Finit/LC200N. I'm a bit less interested SG2/R2 and D2/SKD but availability might tip choices in that direction. For non stain-resistant steels I'll probably be primarily looking for Aogomi 1 and 1.2562 in 2020.
I don't have a true laser gyuto or a k-tip gyuto so I'll probably be keeping my eyes open for those but aside from those gaps there aren't many size, profile, or grind variations I feel like I'm really missing out on but BST presents all too frequent temptations. I am looking at funayukis, pettys/paring, and maybe another bunka or nakiri for 2020. I also plan to add a few stones both synthetic and natural, and a better flattening plate. My sharpening game could use quite a bit of mindful and observant practice.