Is it not? I honestly can't think of anything I'd want it to do more than it already does. I'll be honest, it is difficult to distinguish between browsers these days. But we have holy wars like vim vs emacs, when really the differences are quite small and rather dumb.
The reason I use Firefox is literally three things: 1) I don't want Chrome to have a monopoly, 2) I get ad blocking on my phone, 3) if I'm going to install an ad blocker on my browser, I also want my browser to not be tracking me. I'll be honest, these are the only truly unique features (that I use). Otherwise it is near indistinguishable from Chrome.
I'm happy with FF and while that's still true I don't mind Mozilla branching out. If I wasn't happy, then yeah, there's a priority issue. But honestly, what's so important that's missing? I don't get this holy war. It just seems like war for the sake of war, and no one benefits from that except those on top.