Try to find yourself a copy of "Firepower - Weapons Effectiveness on the Battlefield, 1630-1850" by Major-General B.P. Hughes. It's EXACTLY what you're looking for.

It's probably out of print, but I got my copy at Half Price Books. You should be able to find a copy on Amazon for a reasonable price.

Another issue which you may either not know about or have considered is "span of control". It's a basic military science concept, and refers to the number of combatants that a leader at a particular echelon of command can effectively control. Massed formations were necessary, not just because of the limitations of smoothbore flintlock weapons, but because without tactical communications more effective than bugles and whistles, decentralized control and fragmented formations would have led to utter chaos on the battlefield.

Wolfe, Washington, Burgoyne, Napoleon, Wellington, Blucher and Suvorov fought the way they did because that was just about the only way they COULD fight effectively.