I do something similar--once my brigades have reached two stars I'll try to get them better weapons and customize their names so I can recognize my most reliable troops on the field. Currently, my elite infantry brigades are The Coffee Coolers (a period term for slackers!), Walker's Tigers, the Palmetto Rifles, Daniel's Legion, etc. I do the same thing for cavalry units. With artillery units I'll attach the name "Rifles" after the commander's name, to show me which units have rifled guns. I haven't generally created skirmisher units; if I need skirmishers during a battle, I detach them from my infantry, which was done historically---so I usually sell or pass on to the cavalry any skirmisher weapons I capture. Except Spencers! I will form skirmisher units if I get enough of those.