I've been a happy Netscape/MAS/Seamonkey/Firefox user since forever, and am delighted that it still has a healthy development pulse. Performance hasn't really

I've been a happy Netscape/MAS/Seamonkey/Firefox user since forever, and am delighted that it still has a healthy development pulse. Performance hasn't really been an issue for me, even on an ancient (6-year-old) laptop. Anything on shadertoy reliably kills it, but other than that it's been fine. If I had to pick one thing that really needs improvement, it'd be the intersection of extensions and security. FF has always leaned heavily on extensions to avoid feature bloat in the core product, but I've never really been comfortable installing them because pretty much all of them seem to demand full access to page content on all sites, and that's a very uncomfortable ask for things like primary webmail or banking sites. Now, you could imagine a honking great siteXextension matrix for this, bikeshed refinements until the cows come home and then bikeshed the cows, but I think you could get 95% of the way there with a way to persistently flag domains as "paranoid", and have all extensions disabled on those domains. Maybe something like this already exists, but if so I haven't been able to find it. The best advice seems to be "use a separate profile", but that's pretty inconvenient for heavily-used things like webmail.