Personally it doesn't bother me too much. I just had the Valleyfair only meal plan and used it when my son and I would go. When the whole family would go, we'd either pack something or just drive over to Culver's/McDonald's and eat there. I can see why they did this, Enchanted Parks didn't sell us the meal plans, Six Flags did. The fact that they're offering refunds is lost money to them because the initial purchases went to Six Flags. Unless they have a deal with Six Flags to get reimbursed from the reimbursed, doubt it though.
I'm interested in seeing how much they lower prices like they said they want too. If a $20 meal comes down to $15, I probably won't hesitate to grab something. It would also be nice if they could construct a picnic area outside of the park.