I know why they don’t want to do it ($$$) but they needed to keep the 6 am open. Even with holiday crowds there were less people at the park at 6 am which meant you had a few minutes, not a few seconds, to get a guaranteed boarding group and then you could go ride slinky with a somewhat reasonable wait.
That was an ok guest experience. My 2 experiences with 7 am opens were not good from a guest experience, and I wanted to leave the park asap, and I love dhs.
Personally, I think it’s quite concerning the ride is not ready to properly open yet. It was already late when it did open to BG’s.
As much as I love the trackless ride system, they could have just done an Omni-mover type system and actually had a ride that all the guests could have enjoyed.