I prefer patterns that are complete from jumpstreet!
I'd rather measure the person (bust/chest; back waist length; arm length; hip) and then choose the size that best suits the person...and then make adjustments for shorter (or longer) arms, etc.
I also prefer knitting from the hem to the neck (called bottom up)...and I prefer knitting all the pieces separately with the eventual seaming to follow. I prefer to block the pieces individually FLAT before seaming. It's a better outcome.