MakeSpace - A browser for you, your friends, and your community
makespace.fun
makespace.fun
The site is largely blank with JS disabled, FYI.
(Okay, activate JS, let's see what we got.)
A lot of static content (you don't need JS for that!) and some animation. Looks good.
The content (now that I can see it) is inspiring, seems to me like some very good ideas here.
The one thing I would suggest is don't make a browser, make a local proxy (like proxomitron or cookiengineer's "Stealth" project)
https://en.wikipedia.org/wiki/Proxomitron
https://github.hillwoodhome.net/cookiengineer/stealth
I feel that that gives you the required control or intervention points without the overhead of creating a whole browser (although "stealth" is also kind of a browser).
I feel like making a new browser is just adding a barrier to entry. If I'm at your website I should already be using your thing (though the site, with standard APIs and such.)
Overall this is really exciting and potent. I hope it comes together!