The Solo and Coop Raid need’s a refresh.
Need a new challenges and new and better rewards, because is just the same a long time.
And I think is a good idea renovate that two parts of the game.
For example, make a different events per week, and rewards can be give a chance to unlock heroes of the bonus faction mixing with fragments of the other heroes to the same faction.
Other reward could be the platinum and ruby cores.
I think this a good idea.