Need to revise modifiers

While I enjoy the game certain aspects relating to terrain modifiers I find to be unsatisfactory.
For example in the Lexington scenario, the Union forces , even though they are behind fortifications and hold the high ground, do not seem to have any edge against troops , unprotected, and moving up hill. None of the defensive pluses that existed in reality seem to exist in these games.

little artie about Civil War: 1863, v3.0