New game mode idea
Many have a wide range of champions but unable to use them. They are mere trophies in a cabinet
Therefore I want to suggest a game mode which will encourage all players to collect these champions AND also rank them up
How about a mode where there is only one crazy powered boss, like Thanos with say 100000 health rating and you can keep attacking him until all your roster dies out. No revives, no health. Just use all your roster to inflict as much damage as possible.
Like the arenas, there can be rank rewards or rewards based on damage inflicted. This will also be like training grounds to test out your new champs and see who does best. Right now this game has no training mode unlike other games.
This is like arena on steriods and a new game mode to keep things exciting. If needed, you can also have some "incursion like buffs" for a limited time etc..