@hishgraphics Had not heard of this til your toot, ta. Otoh, tbh, having now read the minimal info at that link, i'm not interested. With my #uBlockOrigin set in Advanced mode, my custom #userJS, & the other native attributes, i remain happy with the privacy capability of my :firefox_nightly: However, building upon this base, these days i am also interested in forks that enhance the FF UI, to deliver a better UX.
That was why, a few weeks ago, i began testing #PulseBrowser & #Floorp. The latter is simply amazingly good [despite still comparatively early development], & so it became my new default browser, in lieu of #FirefoxNightly . There's so much UI goodies to commend it [it's rather like the "Vivaldi of Gecko-land"], not only but including native #Workspaces, #VerticalTabs, #WebPanel, BookmarkBar at top or bottom, BookmarkBar AutoHide when at top...
I doubt that #Mercury is / can be more private than my Floorp [or also :firefox_nightly: ], & even if it happens to be a bit faster, i prioritise that slightly less highly than enhanced UI productivity.