That clue for KRONE is just awful. It has a very obscure three-letter word with the last letter deleted, the definition, as Meursault has pointed out, is incorrect, and the surface isn't particularly coherent.
I'm not quite as bowled over by this puzzle as some. I did largely enjoy it, and the idea is a good one, but rather too many extra letters came from two-letter words and abbreviations (especially down clues), which I've always found inelegant and uninteresting. My other gripe is that both clues to 1 and 10 are inadequate, for different reasons. So it's the detail rather than the overall concept and structuring that I think could have been improved.
However, it appears to be a new setter, so I don't want to be overly critical of an interesting debut.