Urban Legends is a name I'm fine with, aside from simply calling it "Volume 3," it's a name where fans can decide if they want it to be canon with the rest of Mirage or not. It bridges the gap fine, and assuming the last 3 issues don't do anything too crazy or contradictory with the start of Vol. 4, then it'll be ok.
Now if the finale shows us Leonardo stab Karai in the heart and die, then I guess these can't be canon.
