Indeed, Crucible’s puzzle from last month with a sports theme would have been appropriate today. I didn’t think today’s theme was tied to 15d specifically. I saw it as more general and evident from a quick read through of the clues, but I may be wrong. That approach helped me anyway.
Brendan, yes I had the same experiences with the green tick, it’s much faster now. There was an update a couple of weeks ago which was supposed to bring ‘performance improvements’ and they’ve added Codeword and Killer Sudoku if you like those. A while ago I left feedback for the developers about saving the general settings and while they didn’t respond to me it did change!