This puzzle had its genesis in an older puzzle that was rejected in January 2017. That was back when I did everything by hand on ...
read moreThis puzzle had its genesis in an older puzzle that was rejected in January 2017. That was back when I did everything by hand on paper. (Oof!) In the hopes it helps newer constructors, I figured I would share and focus on the rejected puzzle!

The marquee answer was LEFT SHARK, which ended up being a large reason the puzzle was rejected. Editors were concerned that the seemingly uncoordinated dancing shark from Katy Perry's 2015 Super Bowl half-time show was too much of a flash-in-the-pan, and would not stand the test of time. While I'm *still* not convinced that's the case, I certainly understand the hesitation! Lesson: while it's okay to incorporate pop culture into your puzzles, make sure it's firmly embedded in pop culture.
I remember having a beast of a time with the Northwest corner of this puzzle; nothing seemed to work, and I was continually tearing out large portions in an attempt to find fill I was happy with. So boy was I pleased when I went out on a limb and tried sliding FIRST LOSER at 5D! Things fell into place (including the lovely NANOTECH answer at 2D) with only a couple of concessions. The phrase "second place is just first loser" was common to *me* (maybe from board gaming?), and I knew the phrase was generally popularized (or at least attributed to) Dale Earnhardt, Sr. But it turned out that editors felt the phrase was not firmly "in the language," and so did not pass muster. Lesson: a phrase (or quote) familiar to you might not be familiar to others.
Besides those two entries, themeless grids are highly competitive. As such, you need to get as much mileage out of your longer entries as possible. UNDERSEA, ALLOWANCE, PREJUDICE, AIREDALES, and SCISSORS are just not terribly punchy answers. Lesson: While mundane longer answers can be elevated to great answers with proper cluing, too many of them drag a puzzle down.
Perhaps the most important takeaway from the puzzle was that I loved SNOOZEFEST in at 30D. I was determined to get that entry into a published puzzle. Unfortunately, I was beaten to the punch, but hey... FIRST LOSER isn't that bad!