Imagine having the ability to play Cursed Hallow, but making all Merc Camps bosses. Instead of minions lanes a Spider Queen. The Raven lord curse is applied with just 1 Tribute instead of 3. Or at level 10 having access to both Heroic Abilities.
Clearly intended to be played with friends, would this feature be worthwhile?
Seeing how popular Warcraft and Starcraft Custom games, i personally would be interested in a MoBa with customization features.