Best Way to Change a Neckline?

[Rie]

Hello!
I am interested generally in how best to open up the neckline on crew neck sweaters. I have a really short neck () and so I try to knit mostly v-necks but I have to bypass lots of sweaters I really like, especially Icelandic pullovers.
I had this idea that if I just left out a row or two of the neck decreases that it would make the neck larger. Would this work? What sorts of problems might that cause?
I really want to knit Meg Swanson's spiral yoke pullover but the neckline has always put me off.