Well, as mentioned, I'm still way into the start of it.
One thing I'd like to see are more monsters done up in unit individuals. This is one of the things I liked about Empire, don't like about Cry Havok. Appendix D provides a great list including some stnaards, like skeletons, that are really every day useful but I'd like more. Heck, maybe even a Liber Bestiarus section for those with that book (or a web expansion?)
More material on infantry. For example, page 61 has meidum infantry and Lord Jaspyr's Own, but how about human archers, crossbow men, and other common units?
In addition, in siege weapons, there doesn't seem to be anything for fantasy based siege weapons. Am I explaining that? For example, Doom striders from Bastion Press, has large siege weapons in the form of mecha, as does Dream Pod 9's book. Heck, the picture next to siege weapons looks like one of the flail snails with a castle upon it's back. I do like the gnomish rocket battering rams though, just want more stuff like it.
Not truly necessary, but some core classes to take advantage of this information might be useful. The fighter has always been a good soldier, but due to limited skill points and skills (no profession skill?) isn't the best suited to lead in some situations.
Like I noted, these are just some quick observations and I haven't finished the book so they may be in there and I just haven't gotten to them yet.