One thing I've noticed is that, with Global Mods and Upgrades applying to a whole world level.
It can get to the point where the difficulty is either too easy or too hard (having maxed Turrets and equipment and steamrolling easy mode, while still having some difficulty with Hard mode)
What if we get a feature that allows us to manually reset a full world? Dropping everything back to level 1, World level, Turret, Equipment and etc, all back to level 1.
Perhaps the same could be done with global mods, especially if you've maxed them out and find using them to be unfair.
Of course your actual Player level remains, all it means is that your gear levels are back to square one, just to re-experience the early game