"In addition, it would be incredibly useful to be able to have multiple sets of cookies for websites so that I can choose which "shopping profile" I am using in a particular tab (personal, business, on behalf of a client, etc) - this would come in ha...
It's just websites. For research I simply check product reviews in multiple sites I find trustworthy, sometimes also check random customer reviews.For price comparison I use 1 specific site that pulls data from all well known local e-commerce sites.
I prefer Simple Tab Groups extension to all native Chromium options, but having this kind of thing built in Firefox would help with again associating Firefox as the king of customization. Currently this title belongs to Vivaldi.
I personally do not use PWAs, but not incorporating this what is now considered a standard web browser feature that Chromium browsers have does not help with advertising Firefox as a capable replacement. Core stuff should come before experimenting wi...