My suggestions are,
Make the demo guy have 1 GL HE round ( the assault guy only has 1 HE grenade ), fused for time and/or distance, and/or sights for greater accuracy and lesser accuracy when used unsighted, in this case leave at 2.
Make Spawn protection a zone, if your enemy enters that zone they die, reference - BF series.
They need a radio with basic stuff like - enemy spotted, stop, grenade etc for those who dont use ingame voip, so many times other players run past me into a line of bullets because I had no way to communicate with them (convert crosscom single player commands to multiplayer messages). Some additional/optional hand signals would be good fun, as not everyone clues onto who is communicating to them even though they may be right in front of you, hand signals would easily identify the player communicating.