Yes, I was thrown for a while by squint. Not having solved Rance in the clue above, the possibility of 'Quit' for desist loomed large. Which may have been an intended deception by the setter. But as to what anagram indicator is fair or not fair - is there any definitive answer ? Continuing on from squint, what about 'angled', 'aslant', 'oblique', 'out of true', etc.
In a couple of senses, I'm happy to meet the challenge. a) cryptic puzzles become stale if they continually use the same old devices and b) language evolves so to my mind its allowable for crossword rules to evolve...
If I was going to pick on any one clue of this puzzle, it would be the 4th in the 2nd column : 'iritis' was clued as an inclusion, but then one of the surrounding letters went missing (along with the S of iritis), so iritis is no longer an inclusion. I think we've had conversations on this theme previously.