As someone who has owned an HHKB at one point, then switched over to a full-size Topre Realforce board, I have to say you should consider giving Topre-based switches another chance, but on a proper Realforce board instead. Unlike the HHKB, Realforce keyboards use a metal plate internally, which seems to make for a more satisfying "thock" if you will. Plus, you can also acquire a Realforce board with varied key weights instead of the uniform 45g weight found on the HHKB.
Are there any QMK-programmable Topre boards? I'm open to trying them out but not if I have to learn and get used to yet another layout for media controls.
Edit: Also, do I still need to lube them? I remember HHKB felt slightly "scratchy" by default. Some people would also say that cherry-likes also needs to be lubed but my Zealios boards feel awesome as-is.
Keyboard Quantizer makes any USB keyboard to support QMK by proxying USB. It won't support all QMK feature/key combination due to the architecture. Probably you can import it from Japan.
