Ahhh map modifiers. Truly great times for those late night casual runs. As much as I loved them, I think the problem with map modifiers was that casual players were wanting them to be played a little too often which conflicted the player base of casual and tryhard.
Also if I remember right, an admin had to be on to turn them on -imo if they actually came back, I would leave the feature decision to admins (T2 ^) rather than a vote, as admins typically have good judgement whether its an unnecessary time or not to have them on.
ORRR put a votemm cooldown / limit so that it is not abused (don't even know if that's possible)