Woo! Very nice! The only thing I found tricky is that the first two themers I got (IMAGINARYEND and ULTIMATESBEE) had the FRI as a word beginning so it took me a while to realize the other themers didn't follow that rule. Once I did, though, it was a breeze
Incredibly clean fill and I enjoyed the look into the construction process (specifically the look into how Crossfire's features helped with the grid as I am looking into buying construction software). Enjoyed seeing Tuesday fill with a Thursday theme.
Glad I could offer some helpful insight. Also thanks for letting me know how difficult you found it; for themes like this I aim for tricky clues combined with a few gimmes here and there.
Really well done. Professional level quality. I thought having NUG as an answer was fine. I'm all for adding more short words to the crossword Lexicon. It took me 0.001 seconds to come up 'African Queen' as an answer, but it took me a while to connect the dots and realized that I forgot the 'the'.