There were very few regiments that were full-time professionals. Most notably the guard regiments, which also served as testers for new tactics and equipment, as well as a training unit for junior officers. Why not have each of those represented instead of combining them as anonymous värvade troops? There should be more than enough unit slots, and elite and illustrious regiments always add a nice touch to any mod.
"Värvat" can be roughly translated as "recruited"/"hired" as opposed to the indelta (meaning something like divided) which were essentially conscripted. Albeit with a level of motivation, training and zeal which exceeded any common conscripts.
@WinsingtonIII:
I have only heard of named elites being "värvade", like the royal bodyguard. What other kind of units were there?