It's a real pleasure to work with Mary Lou. One aspect I really like about her is that she understands how many theme ideas it takes to yield a single half-decent one. Too often when people approach me with a concept, we find out it's been done before, or it's too loosey-goosey, whatever, and they don't continue to brainstorm. Not ML! I find it takes at least ten thoughts to produce one quasi-workable theme, and even then, development of said theme takes time (and may not work out in the end). I'm glad she sticks through the arduous process.
This puzzle was a bear to put together, and we went through many iterations. People might say left-right (or "mirror") symmetry is becoming my shtick, and I do admit to liking the visual appeal. Most often I need to incorporate blocks in the center of the puzzle, which by nature either take on a smile or a frown, and who doesn't like seeing a nice friendly face right in the middle of their grid? (Don't answer that.)
Theme development alone on this one was very tricky. ML came up with a long list of workable phrase, and we wanted to narrow it down to a consistent set of at least four. Even then, the puzzle didn't feel heavy enough until we came across the idea of adding THINK / THROUGH, a double hint to the themers.
And then the grid work. Tortuous! Every time you work with crossing answers, you heavily constrain your grid. One set of (fixed) crossing answers is easy-peasy. Two is no bother. Three gets a little tricky. Four... groan. You might think, why do those goofballs need so many black squares up there? You'll answer you own question if you try to position those four sets of crossing themers within a 15x grid (and tear your hair out in the process).
Then to the bottom section. I wasn't wild about sectioning the grid in two (the edges of the smile sort of split the grid) but we didn't have many options for layout in those side regions. Keeping the four themers as separate as possible helped us fill relatively smoothly, so it was a trade-off we were willing to make. We did consider splitting some of the entries like CHESS GAME and OUTHOUSES to get rid of uglies like ETE, ASA, EST (ick!) but it surprisingly turned out to only reduce the ick factor slightly. So we decided to accept a tiny bit more ugly stuff to incorporate those nice I AM SO DEAD type answers. Honestly, it's too many glue-type entries in general, but I thought the overall concept was neat enough to be okay with it.
Finally, two notes interesting to me. First, I'm sure there will be people who gripe about DUROC because it's a word they don't know. But why not look it up and learn something? There's a giant swath through the Midwest who would likely argue with you cotton-pickin' city-slickers (pretty sure that's what Midwesterners say). Second, check out the "cross" made out of black squares at the top center. Typically I don't like to do this as it makes the grid feel too "filled-in" with black squares, but in this case, I thought it was a nice echo to the shape of the themers (highlighted in blue/red below).