Just as a heads up, thanks to a little tidy up backstage, there's now a fair few additional free unit slots. So if you have good reason to believe that a faction could use a little spicing up or plumping out in some area or another explain your reasoning and it may (no promises!) be considered.
Please note: "I really like faction x and want it to have a new unit!" is not a good enough reason in and of itself Keep in mind also that elimination of all of a faction's weaknesses is also not going to be a goal (e.g. Rohan and Khand are always going to be rather sub-par in the foot department)!
Also I'm going to be away from town and internet for a week tomorrow so I'll give this a read through when I'm back then.