I dont see a need to "garrison" the troops, already slightly annoyed I have to do "extra clicks" to see the garrison of a city, I would very much enjoy if the battlefield when fighting on an outpost tile would change though, to give the same feeling that you are fighting over THE outpost.
Also hope at some point I get the upgrade that adds 1-2 militia to my outposts 
Sincerely
~ Kongdej