I really can’t put a finger on it… But there’s something that feels cold, uninviting and sterile about the new design. I don’t think it’s purely a resistance to change, but accept that I can’t rule that out as one of the reasons I don’t like it.
I quite like the design cues of Chrome’s app store, where it at least feels kind of an extension of the browser itself in the design. I’ve always thought a look more integrated with the browser’s colour scheme, that looks more “Firefox Native”, would be preferable. The impression I’m getting at present is something that looks ultra-modern, but still clashes with the design of the browser.
This isn’t always a bad thing though. The new TestPilot site felt pretty brilliant to me… It felt more than just a website with extensions, but a true web app, in how it was presented and how it presented the installation, extensions that are currently installed, etc. That experience felt very integrated with the browser (despite, again, being a design clash).
I also put my hands up; these are entirely subjective thoughts. A lot of them are from my immediate first minutes of experience.
EDIT: I forgot to add, I’m using 150% text size in my Windows display settings (Windows 10, fall creators update) along with 120% magnification within Firefox (at present I do most of my computing on my TV through HDMI… Mostly out of necessity)