When assigned to a infantry squad (or even civilians) the units should interact with each other (talking, The Sims style), play other custom idle animations, interact with objects (sit in chairs\tables, stand by fireplaces), lean against objects and that kind of thing; With a max range no so big they start to actually loiter around like they do in DISMISS.
Would be a huge helper to create some immersion on missions withou having to suffer with: code => preview => adjust => repeat in a 2D editor.