First off, it's TiggerDad, named after the beloved character you can play with at Crystal Palace. The generic Tigerdad is someone else who has been here far longer but is not nearly as popular.
I agree that this change stinks. We always enjoyed DME and the counterpart in Paris. A generic Mears bus just won't be the same, especially if I have to schlep all of our luggage. I have three girls and they pack a lot of stuff. When they were younger, we would have an entire suitcase of just princess costumes and swap out three per day. So I don't like this change. But some posters on here - not pointing fingers at you - are going on like the internal combustion engine has been outlawed and they will have to walk uphill both ways to get to WDW. Yes it's going to cost more, but prices have gone up one way or another every year. It's not the end of the world.