Awsome, yeah, sure… what are the most interesring speed or usability improvements were in ff during past 2 years?

How many core devs are working on changing things to make ff secure, faster and (not-so-dumb-)user-friendly? Telemetry opt out? Sure, but… you need to patch and build your own version of firefox to make it really privacy-friendly. And do not forget about re-branding.

For me, OP looks overly excited and hallucinogenically optitimistic.