What I'd like: an editor with multiple tiled windows side by side, filling up a wide monitor, all showing the same text threaded through it. Line n at the bottom of one puts line n+1 at the top of the window to the right of it. Scrolling in one window scrolls them all.
(Of course you could optionally split it up differently to see multiple files.)
(Of course you could optionally split it up differently to see multiple files.)