I use pinned tabs extensively and I prefer that they are throttled even more aggressively than standard open tabs. As long as streaming doesn't break.
I have an option set in FF's about:config that disables loading of my pinned tabs on startup, so I regularly keep 200-300 tabs open and only activate the ones I need.
Sometimes it takes weeks to clear my tabs because I barely see a performance hit from having so many open.
Unfortunately this doesn't seem to be the way most users are using pinned tabs. Check out the great suspender. The only tabs it does not freeze are the pinned tabs.
Extending that functionality to throttling seems natural to me.
It looks cool. Browser memory isn't too much of an issue for me because I run NoScript and uMatrix and thus most of the tabs I have open aren't each running an instance of Google Analytics and stuff like that.
I have an option set in FF's about:config that disables loading of my pinned tabs on startup, so I regularly keep 200-300 tabs open and only activate the ones I need.
Sometimes it takes weeks to clear my tabs because I barely see a performance hit from having so many open.