So reading the Systems preview over on Hero Nexus, one part REALLY stood out for me:
"Heroes can be tested out in a single player Try-Me mode before you buy them."
I can't count how many times I've either had to wait a frakkin age for a champ to come on the F2P rotation, or roll the dice and buy it blind to see what they're like... If I knew nothing else of Heroes, this chance alone would make me want to give it a spin.
Am I just easily pleased, or does everyone else think this is a GREAT idea?