Done the 5 missions needed to get a reward and for me thats about all will do. Nothing much has changed as find players still pick same heros as they would in normal pvp.
Maybe it be better if you picked one then got random, pick one get random etc. Or pick first 3 or have to pick one front middle back etc atm just takes to long to get in battle and find same heros chosen for me. So fails to deliver on the try new hero combos.
Maybe have a pool of 10 15 heros that the game selected from so forced you to think about what heros to select as they needed to work well with eachother regardless of selection etc.
Just failed to deliver the wanted shake up