What a neat idea! David found four nine-letter words such that 1.) they split up into three valid three-letter words, and 2.) the final six letters form a valid word, too. [Called for] is not WAR, for example — it's WAR / RAN / TED. Add in an apt MINCE / WORDS revealer, and I had a blast solving this.
(I've fixed up the answers below so that the answers match the clues.)
Such a neat visual too, those four black pluses so artistic. I like seeing grid patterns I've never (or rarely) seen before, and this one qualifies.
Some strong fill, too, not easy given the constraints. It may seem easy to work around such short theme answers, but I've highlighted them below to give you a better sense of how inflexible the grid skeleton is.
I usually prefer when themeless-esque grids feature entries longer than seven letters since it's easier to convert those into sparkling fill. Today though, I might have liked it better if David had shifted over his first vertical set of black squares to where the SHE of SHEBANG is. It's tough enough to work around all those little theme answers, and entries like DIDICONN don't do much for me. (Sorry, Conn fans!)
Also, David's mid-length fill shone today. Starting off with a BAD ASS (take that, Gray Lady!), a BAR TRAY, continuing with ABOUT ME, HOT RODS, finishing with SHEBANG, I'M BEAT — that's a lot of great mid-length material worked in.
There were some SEINES ADELIE ETCHER SATORI entries that didn't shine as much (and/or felt like liabilities), but that's more par for the course with mid-length material.
Always the trade-offs — I like that David worked in a good amount of snappy fill and kept his crossword glue to a minimum, just some AGTS, ESTD. I'm sure he could have worked in a few more jazzy entries at the cost of more dabs of glue, but the balance that he chose made the puzzle seem highly polished and professional to me.
Four great theme finds plus above-average execution earns David another POW!
ADDED NOTE: I hadn't even noticed that the black square chunks look aptly like plus signs! Wow, I like this one even better now!