The real problem for with how this game is designed to deal with casuals is, there is is very little motivation for helping lower players . The rewards are not that great, and a few star players cant really help bad people beat Titan. And when you put the 2 together, the reward is certainly not worth the time spent not getting a win.

If there was to be progression through the choice of easy or hard mode. Might I suggest that Hard modes be used for the best gear, and easy modes be used for grinding currency points ( used to buy the next best gear ). This will motivate top tier players to help low players with content that is not that tough. In a way crystal tower kinda functions like this, but the KEY part misssing from crystal tower is, it does not really help casuals to progress. Helping people beat CT does not lead to Titan wins