I am under the impression that Dish will never refuse to upgrade your subscription package since they will be making more money. I would be shocked if they have some sort of limit.
I don't know if they still offer 'welcome package' that I switched to. Locals are included. After getting ota channels, I called to drop the locals to save even more. I was told that was not possible.
If I were you, I'd give them a call. If you lost some locals due to the latest disagreement, Dish would be willing to go with your plan.