Thanks Primal_savage. For posterity all that was required was to hunt down the CoreUnits.xml file and make the above addition for all Champions there, then copy/paste that section to a new file and drop it into the Mods folder.
I recently returned to LH after a long break. When I played last I used only 2 mods, Parrotmath's Snaking Mod and NoXPSplit. The latest version of the Snaking mod seems to work fine but not the NoXPSplit one. How would one go about making a new one of those?
I copied the file "championNOXPDIVIDEv1_1.xml" to my "...\Documents\My Games\LegendaryHeroes\Mods" folder but it doesn't work. Can anyone let me know what I'm doing wrong? edit: Solved it. Was clashing with CoS mod so I just edited the changes into that manually. Who knew there were so many bloody champions?