The components are high qulaity, and the system is rather playable. I thought it was interesting that the same problems that plagued the very first version of TSS still are troublesome in 3DoG. In TSS Mk. The extensive errata for the game and the rule changes that have been bruited about on various e-fora indicate that the artillery rules still aren't quite right.
Anther problem is cavalry.
Yet in organization and equipment Buford's division is not atypical of the Union cavalry. Rebel cavalry can't dismount, even though much of the July 3 cav battle was fought dismounted by Stuart's men. They certainly weren't as well-trained and equipped to fight on foot as were the Union cav. I also have major problems with the interaction of the fatigue and movement rules, which force lines of infantry to scurry around like rats to stay on roads and paths in order to avoid incurring fatigue. The end result isn't really a problem, but it feels way too much like design for cause.