Unfortunately I don't have HL2, but the gameplay of IRON GRIP: THE OPRESSION is described pretty detailed on this website:
http://www.isotx.com/index.php?view=1621
One team consists of only 1 player who plays the role of a Rahmos City Legion Officer, burdened with the task to crush an insurgency which has started in one of the Rahmos cities..
He commands and creates AI controlled “minions” to flush out and destroy Resistance cells.
The opposing team consists of a group of human players. Each player chooses a unique hero character. This team plays a full FPS game as they use hit-and-run tactics to create anarchy amongst the Rahmos forces. The goals are clear and the stage is set: Rahmos needs to conquer all the Resistance key locations and the Resistance must kill the Rahmos officer leading the attack.
- Sounds like a cool idea!
An older Q3 modding project just came back to my mind:
UI Enhanced 
(
http://uie.planetquake.gamespy.com/features.shtml
One among a lot of other nice features is an in-game user interface for team orders:
- Hey, that's the first half of what I need.

Second half is to make this available from the spectator's position...
Anyone out there who would like to help on this???
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