If you do, please make it configurable to be a normal app as well as a menu bar app. I don't like menu bar apps that do not actually need to display some sort of persistent notification or control, and there may be others who feel the same way.
Also, we generally shy from "yes" and "love it" type replies here; you can probably assume that 1 upvote = 1 yes.
I upvoted the post, but I wouldn't use this if it was built.
I wouldn't use it because I prefer to interact the web with my web browser, which is always open, already on my desktop, and I enjoy polling HN to refresh it. Tab-management feels different to me than window-management, and I like my current way of organizing HN content from within my browser.
That said, I think it's a very cool design demo, and I think the author deserves feedback from HN.
Also, we generally shy from "yes" and "love it" type replies here; you can probably assume that 1 upvote = 1 yes.