They do get used some, unfortunately mostly in cases where the marshal doesn't trust their army to line up properly or just doesnt understand line settings. Given how few of them are even semi-useful, this is too bad for those armies. Marshals should take more time to work on custom settings and communicate with their armies. Once they get used to being expected to line up themselves instead of being treated like bots, they tend to do well. Repetition and consistency is key.
That being said, new marshal settings, especially in regards to ones that change unit behavior, would be useful. I will put some thought into it.
