On one hand allies seems like a way got get people to buy more just because but at the same time you can't really cry that your codex sucks donkey when you can argument it. I can't fight terminators with banshees anymore (at least not as well as scopions) but I can send terminators with my Eldar as troops :D
Yeah, why bitch about your xenos codex sucking? Now you can just play SPACE MARIEENS instead!
1,000 witch hunters (trying to get rid of this)
1,000 SM (trying to get rid of this)
680 Tau (newest addition)