This may be more trouble than it's worth, but here it goes...
How about a section with the style of play for different armies? This one's a shooty army, this one has good armor, this one can run all over the board, etc. I guess this would be more for the newbies (like me). There could be short descriptions on how the army is supposed to play vs how they actually do. I know theory and practice can be two very different things. Someone on this forum mentioned that some units look good on paper, yet they fail to perform on the battlefield. There could be suggestions on which units to field, which ones to avoid, and which ones to watch out for (if you're playing against them).
I know a lot of these opinions are shared in the Army Lists and Tactics section, but this idea is just to get a general idea of an army's strategy and tactics, not on a specific list. I feel this could help anyone whos starting a new army or just making a new list.