This was a blast! I love how
ON E) the ROSO/OUR crossing felt so awkward and easily change-able into ROSE-EUR unless it had to do with the meta somehow
T WO) you could have done this without the 6 with a singular answer, but you included it anyway
TH REE) the SIX requires an X, and that section ends up having two more Xs with just a bit of EXTRA crosswordese (and no completely made up stuff like "IT'S "NA" ")
F OUR) the grid ends up hiding a SEVEN backwards, between ONION and EVES overlapping with the ONE (thankfully that didn't come into play)
FI VE) I massively overthought this looking at the numbers (Roman numerals) in IJOHN and ROCKYV and then trying to do something with all the Is and Vs in the grid, and even the Xs
SI X) the first number I actually noticed is the totally accidental TEN backwards within ARNETT.