Increase Cap on Mission Creations
I (personally) have found the 150 mission limit to be too low for all the ideas I'd like to put in the game.
I admittedly don't know the reason for the 150 cap, whether it's arbitrary and could be anything or holds a purpose, but if it can't/won't be raised in and of itself, perhaps I could make a suggestion.
Why not make it possible to purchase the ability to create and have live in game a higher number of missions?
I can't see anything pay-to-win about it. I don't want to have to delete existing creations I slaved over just to make new ones.
Missions are a near-completely community driven element of the game and I'd like to see more of them - not people feeling forced to delete or butcher what they've already created.