Emotes that can help you and others marines when in the middle of massive combat. Those emote commands will show an text overlays visible only to other closeby marines and ghosts.
Benefits:
Tired of bleeding to death on the floor and no one notices you? Battle so intense that your screams for help get left behind by combat logs? No medics around? Everyone thinks you just got stunned, while actually dying?
Not anymore, with these super simple emotes, everyone can see you and know whatever the fuck you want.
Commands such as:
*medic
*grenade
*help
*contact
*followme
...
will render an text overlay above you so everyone can see it.

(This is an example)
Implementation:
When that emote is activated, an text overlay is applied for few seconds to every marine in range so aliens can't see it.
after those few seconds have passed, you can use the emote command again, so you cannot spam it.