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I also decided to update the mod that unlocks all heroes for standard Multiplayer maps, but I added Timkhan – Academy (if Guard had his own portrait, I would have added it too) and the map "Deadly Grudges". The map comes with the GOG edition (and possibly others), so I added the map with all files so that players who don't have this map in their editions can play it. There was another map called "In Search of the Artifact!", but the starting hero is locked, and a random hero is locked for everyone else, so I didn't add it (it's almost the same story as with "In Search of Beauty").
The mod files are from 01.01.2015. If you install another mod, for example, one that fixes education for Barbarians, whose files are newer (later than 2015), everything will work correctly for Kujin.
Due to the above changes in the mod, I slightly changed the previous name from Maps_ToE_UnlockAllHeroes to MapsToE_UnlockAllHeroes.
P.S. I also suspect that in the old mod, three maps (War Two vs. Two, War of Survival, and Outcast Lands) were not taken from patch 3.1. I came to this conclusion because of Hangwul; his file is old, and it incorrectly states the name of the Golden Tongue special ability. Also, the sizes don't quite match after editing. Here, I put the maps from the patch.