Would be op. I would rly much would like to give a try to introduce this, along with other formation improvements like 'flexible' formations.  If this PR get in (kindof a prerequisite), one of the two above would be the next thing I'll try to do.

It would work differently than Praetorians.

On the Formation control "No override" setting: Is this now actively decided that it shall be in r28? I noticed it's still in there. I'd vote against it if there would be a vote. The highest effect of formations are currently at the mining and capturing. And it makes no sense. It doesn't require much skill. The player only needs to know there's a weird setting and then set the units at the mines on a formation. Like you just need to set "fast mining".  

At minimum we should have units assigned to repair a building then automatically repair other nearby buildings once they finish, like builder do build other buildings once they finish the one that they are assigned to. Or a stance that makes units repair automatically any damaged building nearby. Repairing palisades is a real chore right now because of the lack of such mechanisms.

I wrote "with their own root" so that they don't decay. If they have a small amount of territory outside their own space, then it's possible to build towers or whatever else that gives more territory, and then you don't need a Civic Center/Kleroukia. So way overpowered imho (except maybe in rare balanced maps : trying to build something there could be a strategic objective, while the opponents have the strategic objective of preventing other players from building it).   edit : oh, maybe you meant the P2 garrisonned tower or whatever that I proposed ? For that too the balance towards resource gathering is hard to find, as I wrote in my original post.