Yeah idk. If we are going to remain the sharpshooter route we will either be the Clinch Rifles or the 1st Nroth Carolina Sharpshooter Battalion. If we go union and remaine sharps its either the 1st/2nd Berdan's Sharppshooters, 1st Maine Sharpshooters or Company F 24th Mass. If we want to be like melee skirms than likelly the 24th Mass. My ancestor served in Co. I since late 1861 and rose to the rank of Captian of Company F by early 1866.
But really we could be any unit on either side because all infantry was trained in skirmish drill and were often deployed as such.