I suggest a single thompson for the officer model to replace the current silenced sten, but there are concerns it will be come problematic.
I don't like give a squad default special weapon,because some time this weapon will be replace by other……like USF Lieutenant and Captain,they have Thompson,but after pick up weapon and lost member,sometimes will replace officer Thompson,and only when officer dead and refresh other,it will be back……so it will be big waste sometime