Change FF rules to curb spam FF
I think that each player should only be able to FF once. If it happens that the whole team has tried to FF then everyone can FF one more time (to avoid weird situations). But mainly this is to avoid being subjected to FF spam when it's clear it's gonna be voted down.
In addition to being annoying, the ability to repeat FF gives some players the notion that they're entitled to an FF over the wishes of their teammates, and also leads to flame, inting or AFK when they don't get what they want. If there were firmer rules surrounding FF they would be able to let it go and buckle down which would greatly reduce common tilt and flame.