I admit, I was all in for the 99s right off the bat and it was fun for like the first 3 sets. However, it got stale really fast. There were too many repeat 99s, worse 99s or worse cards after a 99 for my taste.
It's also annoying that we are in December and there are still a ton of Legends that don't have 99s or good 99s yet. How do we not have a good 99 Willie Mays yet, but have like a dozen JT Realmuto and Kyle Schwarber cards?
I do feel like this could have been a good idea if they had some sort of game plan for it.
However, if it stays as is, I'm out next year.