One of those eye-opening themes, a Wish-I-Thought-of-That (WITT). I'm in agreement with Will, it would have been just about a perfect theme if Michael could have found even just three examples where the three letters were consecutive. I'm not a big fan of random circled letters, so the consecutive trios were particularly pleasing to my eye. Bravo for uncovering this theme, Michael, very fun.
I never used to pay attention to my 1-across, but I've come to realize that consciously or subconsciously, solvers' perceptions tend to be affected right away in that NW corner. And to start off with a relatively esoteric Spanish word crossing A MOLE ... not a great first impression for me. I think it affected my perception of the puzzle, especially upon seeing PRS, ENOL (with a crazy clue), ALEE, et al. as I went.
I did really like some of the long fill, SHADOWBOX and PAY TO PLAY adding a lot of body to the puzzle. But my constructor's brain just couldn't help wondering why with only four themers, two long downs, and a 78-word puzzle, there seemed to be quite a few compromises. I can understand why someone would include SABO (MLB or Reds fans — glad to hear Michael's thinking on that), but ENOL is pretty easy to replace with something much nicer. Same goes for SALA/AMOLE/ATESTS in that isolated NW corner.
Perhaps some solvers (and chemists) will argue that they like the crosswordese ENOL, because it helps them get a toehold as a freebie. But I strongly feel that this sort of thinking turns off newer solvers, as well as a more recent generation, and constructors should avoid this rationale whenever possible. As Will says in his submission guidelines: "Keep crosswordese to a minimum."
And I can understand Will's editorial philosophy of "let the constructor's fill stand unless there's something that REALLY needs to be fixed." There is a certain beauty in that, as the constructor is allowed to present his/her work as he/she intended. I don't think it's the philosophy I'd take if I were editor, but I respect Will's belief. So given that, I would ask any constructors reading this post to keep Will's above criteria always in mind. Totally fine if a challenging construction requires a weird little entry or two, but if at all possible, why not strive for perfection?
Overall, a very nice theme which I felt could have been made golden by upping the quality of some fill, notably the SW and NW corners. I'm not as rabid/fanatical about "The War on Fill" as others, but I do think that as with every evolving, competitive market, the NYT must continually work to maintain its reputation as the gold standard in daily crosswords.