More than one lane seems to be ideal. I'm assuming running 3:2 like in the early 2000s, everyone these days is running full screen and alt-tabbing constantly??

Give me as wide as they come!

I like some things full-screen, like my browser, but vim (ok technically full-screen itself, but split) always 2-3, probably most other things 2 side by side.

But I don't have a square monitor (I think it's 16:9) I don't see why that would be an improvement. If anything surely we want it wider for side by side use, so more 'lanes' can fit?