I'm just over half way through my first 2 player game with that lineup and I think it's excellent. Running three bots was way too much work, and I had little mental energy left to do my own strategizing when I played solo as the coalition.
Trying to figure out how to get synergy between your factions is a whole layer of play unto itself. For example I've been building warlord bases where the Taliban can get control so that the Taliban get a resource when the warlords traffic.
Not without historical validity!
If you are especially competitive you might want to clarify what the victory conditions will be with the two player lineup. Will you score each faction separately and add them up or just rank them in order. Since the warlords have two different numerical victory conditions, resources and uncontrolled pop, I'm not sure how to compare scores at the end.
I'm just enjoying the game so haven't bothered to raise scoring with my opponent.
For what it's worth, this is an official play option, found in a tone box on page 4 of the Rules of Play, and specifies how to score victory:
No Non-Player Option: If learning the game with 2 or 3 players,
ignore the Non-Player rules (8.0). Instead, players control
• With 3 players, Coalition controls Warlords.
• With 2 players, Coalition controls Government or, if preferred,
Warlords; Taliban controls the remaining Faction.
Play only stops on a victory check (6.1) if all of a player’s Factions
are meeting their conditions.
After a final Propaganda, use the lowest victory margin of each
player’s Factions (7.3). Players may not voluntarily transfer
(1.5.1) between their own Factions.
Enjoy and best regards! Volko