Tab discarding is just a more efficient, native implementation of what Great Suspender aimed to do in the first place.
I'd much rather have a way to just stop all JS on a "suspended" tab so that FF doesn't burn 20% CPU on tabs that aren't even visible. (Yes I'm aware that JS timers, etc operate at reduced frequency for unfocused tabs. I'm talking about stopping them entirely.) Discarding may be more efficient for the browser but it's less efficient for me the user, so I don't use it.
Tab discarding does have the slight advantage that it remembers what you typed in on the page and where you were scrolled (but nonetheless still causes a reload).
What you are asking for regarding slowing the performance of background JS is something browsers already do: https://stackoverflow.com/questions/15871942/how-do-browsers...
Making that behaviour more aggressive seems like it is liable to cause significant problems to the user experience with minimal benefits. E.g. background media playback would likely be broken, notifications, etc. Whereas you could simply use bookmarks instead of open tabs to get the same effect (EDIT: actually tab discarding would already be better than that method as you note).
As I wrote:
>>(Yes I'm aware that JS timers, etc operate at reduced frequency for unfocused tabs. I'm talking about stopping them entirely.)
>Making that behaviour more aggressive seems like it is liable to cause significant problems to the user experience with minimal benefits. E.g. background media playback would likely be broken, notifications, etc.
I want none of those things from the "suspended" tabs.
>Whereas you could simply use bookmarks instead of open tabs to get the same effect
How? Do you mean I would load the bookmark into a new tab when I wanted to visit it? That not only has the same problem that I described for discarded tabs (have to wait for a page load), but is even worse because it loses all the context that discarded tabs do retain. Not to mention the annoyance of maintaining bookmarks for arbitrary tab groups that I just happen to have open.
