As it is, right now mayhem mode modifier provide pure randomness. And as such, not really well balanced for fair and fun gameplay. Players often will keep reloading maps eitehr to get rid of utterly frustruating modifiers, like this…
Or to get totally totally OP modifiers, where M3 mode literally would be easier than normal mode
To adjust that, first you need separate modifiers into two groups:
First group is purely difficulty modifiers. Where mobs will get random resistant to element, higher health, and so on.
Second one is more of gameplay modifier. Where players gets both buffs and debuffs. Not necessary making game harder, but driving players to change playstyle a little bit.
And following those rules modes should get following:
Mayhem 1 - 1 difficulty modifier, 2 gameplay modifiers
Mayhem 2 - 2 difficulty modifiers, 2 gameplay modifiers
Mayhem 3 - 2 difficulty modifiers, 2 gameplay modifiers
That way M3 mode both never will feel unfun, with neither only difficulty rolls, nor OP rolls.
Further more some roll particular modifiers need to be adjusted:
“Skillful: Players deal 50% less damage with all guns, but gets 45% reduced cooldown and increased damage with skills.” - let’s be honest, over 99% of all damage done in game - is gun damage. And reducing gun damage to half will simply never feel fun. 25% penalty would be somewhat tolerable. Although overall skill damage right now also quite low for mayhem 3 mode. To really reward players with that modifier, make skill damage increased by 100%. Then perhaps players again will start using Iron Bear on Mayhem 3 mode.
“Hit and run” and “Aim for the head” simply never should be rolled together. As practically when both rolled at the same time - all gun damage simply reduced by 25%. Single instance of those modifiers are fine. As they proposed to use more specific guns, with good damage increase.