A Module that can spawn friendly or hostile (or both) units in a user set radius. I know that there is such a Module out there, but you need to get familiar with the use of it and not everyone who wants to make missions, wants to be a programmer.
Just make it easy to use. With an UI where you can select friendly´s On or OFF. Witch Units to use,what weapons aso, in form off selection boxes or something similar. Should they always attack you or should the follow a path on there own.
Easy to use should be in all aspect´s of the Editor to get creativity of making missions to a new level. If i need to become a programmer first, to get the feel to my mission that i want, is frustrating and a professional Programmer of your staff can to it in no time, compared to a normal user.
Why isn`t it possible to but a unit on the map doubleklick it an choose the ammo and outfit of that unit via UI.(It´s 2013 Guy´s!:))
It can be done, just do it guys! :)