Hmm, open tab performance hasn't been a concern of mine... since the turn of the century? (cough) Not using electron of course.

I suspect a preference here has more to do with how many monitors one has. I have multiple so prefer multiple windows. If away from my desk, having a fullscreen window split makes sense.

Which computer science frontiers are being pushed here at the user interface level, do you think?

(This is referring to their recent integration work. The acceleration layer was usable a year or more ago.)

I would have preferred something like this to the current UEFI environment and shell, a FLOSS 64-bit DOS. A cool retro boot manager and diagnostic env perhaps.

Could this run from an efi system partition? Seems to support fat12, what about gpt?

Does it poke video hardware like DOS, or have a terminal like output?

How prominent? Can you remove it from main window?

Separate tools that do one thing well, works better sometimes.

E.g. editors often integrate a terminal and file manager. I already have them open constantly, so have never used the integrated versions.