It's supposed to be subtle - the goal was for the new grille to look like it came from the factory, but as an updated version of the original grille. So no angry bird eyes or other strange features, just a factory-looking modernized grille to evoke memories of the CJ grille and reflect the the newer JL grille design. And since the TJ was the only open Jeep since the 40's not to have turn signals in the grille (MB, CJ2/3, CJ5/7/8, YJ, JK, JL all had turn signals in the grille, only the TJ didn't), of course I made the mold so grilles could be made with no turn signals or my choice of turn signals.
As for the differences warranting the effort required, the end result was totally worth it to me. And since I now have the mold, making more of these grilles takes less then $25 in materials and a little bit of time to lay up the fiberglass.
Speaking of turn signals, I'm thinking of molding a second grille, this time I'd set up the mold to support factory JK turn signals.