These sound interesting although like you have pointed out The 1st post assumes that we all know what “Kerrs” edit already is and you have expanded on them…

I dug about in FOTR and found a better way to do the 1st half of the film which is much better structured but I’d be interested in seeing the extended versions as were originally intended.

That means the flash back in The Two Towers of Rivendell goes back to FOTR
Saurman is killed at the end of The Two towers not the start of ROTK

These two things would be the major things I would be looking for. Is it like this in Kerrs edits?