I just want to add a note about allies/zombies redirection.
As far as I know, redirect rally posts currently redirect your own ships, allies (gatlings, human resistence fighters, etc; don't know about multiplayer allies) and zombies.
What about making a special "allies redirect rally post", which would redirect only allies (gatlings, HRF, ...) and zombies, and one for controlled units only?
Isn't the "are you ally/zombie" check too hard to code?