I like the look of the latest MLB shirts. The contrast under the collar and in the button area are great. I think it would work very well if you were to use that template, but use some different graphics in those areas. (Camo, pink, stars & stripes, etc)
The issue with some of those types of shirts that others are putting out is that it’s too much of those things, and they end up looking too gaudy. But just a splash in those 2 areas would be great, along with a more breathable and flexible material than what Smitty is using.