I prefer knitting sleeves FLAT, and one at a time.
If something is amiss about the modifications for length, or any other thing, I'd rather tinker around on SLEEVE #1. Why 'fix' two sleeves?
Also, I block ALL my sweater pieces...and I do not like blocking 'in the round' stuff.
Mattress seaming is a breeze, so I can't see any advantage for knitting in the round when the pattern doesn't say to do it for some reason.
However, I have been known to knit FLAT when the pattern says to knit the sleeves in the round.
I also prefer to 'fit' and seam my flat sleeve to the body (fronts/back). Easier than seaming a sleeve 'tube' onto or into the body armHOLES.