One thing that I found disrupts my workflow is when I have two tabs open and I want to combine them into a split view. The best method as far as I can tell is quite cumbersome: ctrl+shift+C to copy the path from one tab, close the tab, press f3 to open split view, select the path, ctrl+a -> ctrl+v -> enter.

The logistics of combining tabs sounds a bit complicated (which I assume is why this isn't implemented), like if either tab is already in split view what is the expected behavior?
My proposal is extending the already existing shortcut ctrl+shift+C, which copies the working directory to the clipboard. ctrl+shift+X should copy the path and close the tab/split view column. ctrl+shift+V should switch the tab/column to whatever path is in the clipboard, as if you pasted the path and then went to it.

The new proposed workflow is as follows: ctrl+shift+X -> f3 -> ctrl+shift+V.
And of course these shortcuts would have uses other than combining tabs.