<<I would not call any of the guests "stars">>
The "stars" are a bunch of wanna be's and never were's :-)
Any "star" who is currently gainfully employed in the profession would never be able to take the time off necessary to spend 3 months on DWTS.
<<I wish they would stop having Tyra act so goofy.>>
Tyra is a dumpster fire. I don't know why anyone would think she would make the show better. Tom and Erin were just fine. If it's not broke, don't fix it. That's not to say there weren't problems with the show. The scoring system needed an overhaul. It had become purely a popularity contest, rather than true competition. I'm not sure that they have solved that problem with the changes they've made. We shall see.