Thanks for the interesting project!
What I’m playing with now is LiveVue from @Jskalc together with shadcn-vue which is using Radix UI under the hood.
I’m trying to convert styling into UnoCSS, but with Tailwind it seems to work well and looks really promising! I think to create live_view “proxy” components which would use shadcn-vue more primitive components underneath. It should help with UX a lot, at least in theory, keeping the main logic inside LiveView.