My thought process for this idea is very surface level and definately could be implemented into the server with a few restrictions.
My idea is to give those in the SGT class and above the ability to build. I think this would be a great addition to the server for the fact that we have a giant simulation room and you cannot build a single thing in it without the help from a GM. This can be annoying because in a late or no activity scenario this can give battalions are just the server something to do if a GM isnt on. For example, Its late and theirs nobody on except for a few active people, you could have a pre-build sim where it's you VS a ton of different CIS droids and you have to clear it, or the ability to create a PVP sim where it looks like a jungle terrain. Those were probably bad examples but there are other ways it could be used as well. If your doing recruiting for your battalion your able to create proper tryouts such as Breach & Clear, Environmental Hostage negotiation, Trigger discipline, targets to shoot at with Pilot or tank training, and countless other aspects.
Ofcourse this can most definitaly be abused which is why I have a couple ideas to enforce it. When you give building and posssible a PhysGun to the class you could implement a ghosting effect like what DarkRP servers do if you build inside a person. You could implement a SGT or NCO test so that you have to be promoted and take a test to get that ability. Or have to have reached a certain amount of hours to get the ability to build.
This addition would be great for the server and in my opinon have a chance of boosting activity for battalions because it gives them more stuff to do, whether it be building a training sceneario, doing simulations. It would be awesome because you dont need the help of a GM especially if one isnt on.