As for miters -- it is a noncommital middle ground between FCs and barrels. It's not as tacky as cocktail cuffs, but there is something too willful about the miter -- it's deliberate, you have to ask for it -- that makes it run afoul of the taste heuristic Manton mentions. It's like sticking your thumb in a pie and pulling out a plum -- a little filligree or show of fanciness. But I don't have a solution, because unless the barrel cuff is exceptionally nuanced, it gives me a queasy feeling when worn with a suit.
Barrel cuffs on BDs and casual shirts, miters on dress shirts, has been my rule, but it's an imperfect compromise. Then again, that's OK. I won't wear FCs, for what it's worth.
I was thinking about a straight barrel cuff with no curve on it. Is this too weird?