Something I've been toying with is adding some talents to differentiate skills. For example, if you want only one Ranged skill, then add the Firearms (rifles, pistols) and Archaic (bows, spears) talents. Without the talent, there is a penalty (setback? difficulty upgrade?) for use of the Ranged skill when using that sort of weapon. If you are worried about the extra cost for a slot in the talent pyramid, these talents could easily be "free" ones given by a Career or Race.
Wild West Setting for Genesys
If you need some NPCs from True Grit:
Edited by DScipio