This one was included in the fantastic ACPT Virtual Table organized by Rachel Fabi and Nate Cardin a few weeks ago, but I'm finally putting up an actual post for it!
At Lollapuzzoolla back in 20...17(!?), I overheard Sam Ezersky talking about a 15-letter entry he wanted to debut in a puzzle. He meant it for a themeless grid, but I immediately assumed it was going to be a flashy theme revealer and started brainstorming possible themers with and/or at him. I didn't end up shamelessly stealing his 15, but Sam was super nice about talking through the theme a bit along the way.
If you give it a solve, let me know over on Twitter to help relieve my crippling insecurities. Hope it's a fun one!