agreed 100% with the storyteller, rate of fire and manouver quality should, togehther with cohesion/morale under fire, be the qualities benefitting most from experience. I dont think close-combat skill increased all that much from experience, and accuracy of fire were so low anyway for musket troops it shouldnt increase much.

rate of fire were also, together with the ability to stand and hold ranks of course, about the most vital quality of line infantry.