If there were not Melee, the team could make a dota mode which can be implemented to crpg.
Bots spawn and attack the opposite bases(destructable objects) in a symmetrical map, as you kill them you gain money and like the old xp system in crpg you gain xp when you are close to action. Each time you choose your class manually and you start from level 1, you pre-choose 5 armor, 5 weapon etc. in site and as you level up you can equip them. After one of the bases destroyed the game restarts and gained xp will be added. That would be amazing...