For me, it's pretty simple to come up with a plan B, because we're planning to go in a time considered low crowd, or value. Yes, we'll arrive on Sunday and leave Saturday, which would be regular days, BUT, if Disney thinks I'm paying regular ticket prices for 7 days, when only 2 half days will actually be spent in the park, they're sadly mistaken.
As long as it's possible, I'll just buy 5 day tickets for M-F, and spend the Sunday we arrive at our resort (and/or checking out other resorts) and the Saturday before we leave in Disney Springs or vice-versa. And if I was planning on being in WDW on a full weekend day, I can opt to leave WDW property entirely for one day. And I think that's the last thing they want folks to do, so, hopefully they'll be thinking of those type of reactions before they implement whatever the new pricing may be.
I'm perfectly fine with simply paying ahead of time for my tickets and paying less for the value days and more for the regular, but I expect those tickets to be loaded into my magic band in such a way that it merely comes up that we have paid already. End of story. It would be crazy to make any of the changes affect the actual physical entering of the parks. You want that to go as smoothly as possible.
I'm just not going to choose to pay regular fees for value days if I can work around it. Orlando has a lot to offer. If WDW wants to give me a reason to leave on certain days, then that's up to them.