[TeMPOraL]

> - Javascript exec turned on/off by domain

That one you can get with uMatrix, which gives you a table of Domain x {cookie, css, image, plugin, script, XHR, frame, other}. You can use this table to selectively decide what gets loaded, and what gets blocked. The default rules are, everything "first-party" (from the domain you're visiting) is allowed, but only images and CSS are allowed from any other sources. Beyond per-primary-domain overrides, you can also whitelist all or some of the content permanently in settings.

I've been using it for the past year or so, and while occasionally annoying, it makes the Web a saner place to visit, and it also makes it very obvious just how much useless crap people make you download to display their site.

EDIT: also, favouriting your comment for future reference. Maybe one day I get pissed enough and write the plugin you describe.