If I understand you correctly, the ctrl-N key is a hidden command?
Yes, I know that when a Great Leader is produced you can rename the original unit.
In the version I was playing, the upper right most button of the common units action button would activate a pop-up window that would allow the unit name to be changed. I was successfully using it to list where the unit was built, which combat group they were fighting with and any successfully campaign they were involved with. It was interesting to track how some city produce better fighting units than others, which obviously is a random dice qwirk. The renaming ability showed up in one of your first TAM versions. The one where alot of the game headers were out of place, at least my versions were and I remember downloading the same version at least three separate occasions, with the same out of place header error. But, the Mod was exactly what I was looking for so I ignored the small imperfections.