Hex's and Totems
Can the number of totems match the number of generators? Coupled with this I think the killer should have an additional perk slot reserved solely for Hex's.
This would create some redundancy for the Hex's that require 5 totems as well as creating more of a choice between powering through or slowing the game down to eliminate these totems.
The additional hex slot would probably end up being used for ruin for most killers, but it would free up an additional perk slot and add a bit more variety on that front and allow weaker killers more options.
Naturally the amount of bloodpoints that a survivor gets from cleansing these totems should be increased, perhaps even scaled with a multiplier for how many hex's the killer is running.