1. Don't have idle peasants
2. It's better to go a third building(Rax) off the peasant that
-would- be your 5th one in mine
3. Never build more then 4 Breakers, they aren't meat or good at fighting. They're support.
4. Mix in Sorc, I find priests not to make more of difference then Sorc (Even with inner fire, Polymorph is much better, My opinion.)
5. As for teaming, don't attack solo unless all your teammates attack a separate base.
6.If you outnumbered when you wander into a base, solo, for some reason..Run..(Instance: 14-15 Crypts v. 4 Breakers, 4 footies, 2-3 priests)
7.Humans have real good heroes so take advantage of that. Get a second one as soon as possible.
8.Get Rifles. Rifles are awesome. Footmen are..NOT.
That's about it. You could get a better build order. I also don't like human players not going farms along gold mine trail. May not make a difference, just something that bugs me.