Haters call these A E I O U themes "vowel movements," but I enjoyed having this old friend stop by after a long absence. As Andrea Carla Michaels has said, there's a poetic quality to vowel progressions, a sing-song lilt. It's fitting that they end with a long "ooh" sound.
Wait. Shouldn't that be a "you" sound? Like this one ought to end with LIEU? That's what I used to think, but vowel progressions have developed their own "standards" over the years, and most all of them end with "ooh."
Another "rule" they typically have followed is that all five words are either stand-alone, or all five sounds are integrated into a single word. Here, LACKS and LEXINGTON aren't consistent. However, a mixture of two stand-alones (LACKS, LICKS), two integrations (LEXINGTON, LUXEMBOURG), and a quasi-parsing (LOCKSMITH, the S shifts away from SMITH) is a reasonable solution.
I appreciate that this one flaunts another aspect of the vowel progression canon, that vowel progressions must use long vowel sounds. There's no hard-and-fast reason for that. It's elegant that every theme answer today incorporates a short sound.
(Although, my French friends down the street are preparing to storm the Bastille, pronouncing the last one "loohks-em-bourg." Ooh, ooh!)
Some tough vocab, with not only AMORS but RECTO and OVULE perhaps tricky for early-week solvers. That is completely subjective, but there is a lot of short fill that's called out on editors' specs sheets, i.e. partial OR IN, RE- addition in RESEEK, the AHL, etc. I might have tried to break up the big NW/SE corners to make the solve friendlier and smoother, but I can see the benefits of working in the delightful INTRICACY and snazzy FOOT MODEL.
And I appreciate Brooke looking back on her own work with a humble eye. That's a quality all great constructors possess.
Brooke's point on GO BALD is well-taken. It's funny when I say "chrome dome" about myself. I hesitate to say it to other guys, though. My (identical twin) brother is still attempting the combover. I try to be sympathetic, but ...
Nice addition to the genre; I enjoyed the change of pace of all short vowel sounds.