Some GMs who are currently at 0 ADV will look for ways to get to 14 in 1 season instead of waiting for and paying for 4 seasons. We can debate the merits and ethics, but it's going to happen.
So there might as well be a tread on that topic -
If the same WIS user takes over the team after rollover, but before the season starts, are the budgets kept the same, or reset to 10?
If late renewal does not reset budgets, worlds / commissioners will have to decide if they will allow GMs to not renew their team, create a new WIS account, and then claim the team using that account. Because that will set all budgets at 10 (6-14) in one season.
If someone creates multiple WIS accounts (to use a discount code or whatever) will WIS merge those accounts into one if asked? I'm sure some GMs will value their history and want just one account, but many will be fine having 2+ user accounts.
I'm all for WIS making this change. ADV and player development are not the best features of HBD. All actions have counter actions and consequences. Probably best world and WIS rules and procedures are defined before the change goes live.