[Burt the Butcher]

According to the rules:
"major changes to the rules can only be made through a league-wide vote. Any member club can propose a change to the rules by calling for a vote from the entire league during the off-season ONLY. Simply write up something that can be answered with a yes or no, and if a majority of clubs vote yes, the rules will be changed accordingly. Any rules changes after the start of the draft through the conclusion of the season must be agreed upon by the entire league unanimously. In the event of a tie in any rule vote, the rules committee will hold a separate vote, with majority rule breaking the tie. "

Even though it says Draft, my interpretation of the end of the Off Season is when the Hard Cap begins, April 1st, also the start of RFA bidding.