I've considered it - but what is the reason you'd want that (browser is very easy to use and has no security risk for players)?
If it's for offline play, I'd recommend you use
- the itch app (for PC / Mac)
- or for phone/tablet the (unoffical) mobile itch app
both will download browser games from itch and make them available offline.
Or is there any other reason you'd like a standalone download?