You are now hearing from Mr. Jersey Ignorance himself--I've never owned one! All I know is that most of them have three pockets on the back. Since I like traditional stuff, I would like that.
I would like short sleeves. If short-sleeved jerseys also have zippers, I think a 3/4-length zipper would be good. If not, fine!
My favorite color is yellow, but I believe that color is reserved for Lance Armstrong.

My least favorite: blue. Second least favorite: green. All other colors are great.
But my problem is more one of money than of taste. If the finished product is going to cost more than, say, $35, I will probably have to bow out. It's just a fact of life, not that I wouldn't like to support a worthy cause.
Thanks for your effort re: contacting the manufacturers, etc.
And, by the way, I'm very happy you came back.