I’m mainly concerned about whether they’ll keep improving to keep up with Chrome. Firefox already has a lot of performance and resource utilization issues, but unlike Chrome who hogs your entire computer, it’s the opposite for Firefox. At least on Linux, it only lets a tab use two CPU threads, whereas Chrome can use all of them, I found out when I had to a CPU rendering benchmark to stress test my new processor, and I couldn’t bothered to install something so I just looked up online ones in the browser. Also, as far as I know Firefox has no GPU acceleration support.