Suggestion.... why don't you give rewards for going to see a marvel movie? Could be supplies, could be costume credits, could be anything really..

Second suggestion: late game players don't really need blue and purple gear. The bottle neck is orange and teal gear. Why not have an upgrade option. 100 blue gives 10 purple, 100 purple gives 10 orange, etc.

Put more characters in the arena store/orb. Those credits are essentially worthless. The drop rate on phyla-vell is horrible. Stop flooding the war store, even things out a bit.

Lastly, and for this i have no suggestion on how to fix it but, gold gold gold... you have us 10 million gold and it was great. You could give us 10 mill gold every week for months and it wouldn't adversly affect the game.