That does not make any sense at all in any capacity. For one, no event should dictate another event's budget. That is just asinine. And it would also be a completely moronic thing for them to cut the budget for Grinchmas AGAIN, especially when they're about to get hit with A LOT more guests this year due to Potter's new holiday light show & festivities. Not too mention, a park the size of USH should NOT make the holiday season focus more on a small capacity land that causes a huge cluster-F***! (exhibit A: Nighttime Lights at Hogwarts)
Interactive element? ....grooooaaann. That is probably the last thing the event here needs. Unless they want to pull a Knotts & give us a laser-tag haunt experience, BUT with the Terror Tram, then sure (totally want to see that now).
But yea, back to the main topic at hand... You don't cut the budget for one event to "set aside" for another event for the following year. It doesn't work like that. They need to stop being cheap asses & actually PLUS the events.