This is what I did with my blazer.
In the process of putting together the above grill, while prepping and mocking up, I thought this was sort of cool in a way
And since you asked about mesh, here are a couple of versions of a rendering I did for my other blazer.
And this is probably more of a fantasy of mine.
Nobody out there makes any sort of a mesh insert for these trucks that I am aware of. They would be pretty easy to make though. The earlier model would be totally flat and the later model only has one angle to it. The reason the last one is more of a fantasy is because of the whole front end being a hybrid of the early and late models, the actual grill would be the easy part.
While we are on the subject, I don't think it would be too hard to make a mesh "phantom" style grille for the late squares, but I have no visual for that. And like the OP I've wondered how an old hotrod bullet style grille would look on the right square, but don't even know where to start on that one.