I’m actively working on a web front-end for Newpipe (Tubo) in my spare time. Alhough the core functionality is already there, I have yet a lot of features/nice-to-haves to tackle, as well as many refinements to the UX to make it as close to the Newpipe app as possible.
Looks good! You might want to join forces with https://github.com/LunaticHacker/lemmy-terminal-viewer