[soulofmischief]

It wouldn't take much work to make filter lists first-class citizens in Logseq, if you want to try hacking it in: https://github.com/logseq/logseq

It would be a good feature to have, and it's better than starting from scratch.

> I desperately want to be able to hand write notes sometimes, type them sometimes, have them all in one place, and have that place be a stream of consciousness and searchable.

Logseq doesn't currently have saveable filter lists, but you can create pages with any title which will still collect and display direct and indirect references to that title/tag. This gets you 80% of the way there already, if you get used to the workflow.

Logseq multi-device sync is now in beta, as well.