Just to offer some alternate suggestions: the SMAniaC civics.
Of course neither the vanilla SMAC or SMAniaC could be directly used for a Civ4 mod.
POLITICS
1) LIBERTIES
Democracy: +1 TALENT, -2 POLICE, -1 SUPPORT
<->
Police State: +1 SUPPORT, +2 POLICE, -3 RESEARCH
2) STATE STRUCTURE
Unitary: +2 PROBE, +1 SUPPORT
<->
Federal: +2 EFFIC
=>
Unitary Democracy: +1 TALENT, +2 PROBE, -2 POLICE
Federal Democracy: +1 TALENT, +2 EFFIC, -2 POLICE, -1 SUPPORT
Unitary Police State: +2 SUPPORT, +2 POLICE, +2 PROBE, -3 RESEARCH
Federal Police State: +2 POLICE, +2 EFFIC, +1 SUPPORT, -3 RESEARCH
ECONOMICS:
Subsistence: /
Private / Free Trade: +3 ECONOMY, +1 RESEARCH, -1 TALENT, -2 INDUSTRY, -1 SUPPORT
Planned: +2 GROWTH, +1 INDUSTRY, -2 EFFIC
Private / Protectionist: +2 ECONOMY, -1 TALENT, -1 INDUSTRY, -1 SUPPORT
(Longevity Vaccine)
RULING ELITE:
Technocrat: +2 RESEARCH, +1 EFFIC, -2 PROBE
Junta: +2 SUPPORT, +2 MORALE, -1 INDUSTRY
Empath: +2 TALENT, +2 PLANET, -2 GROWTH
Plutocrat: +1 ECONOMY, +1 INDUSTRY, -2 MORALE
(Cloning Vats: Power = Junta)
SOCIETY:
Frontier: -1 PLANET
Cybernetic: +2 RESEARCH, +1 INDUSTRY, -3 POLICE
Anthropocentric: +2 GROWTH, +1 MORALE, -3 PLANET
Green: +2 PLANET, +2 EFFIC, -1 INDUSTRY
(Future Society line. Network backbone & Cloning Vats)
Basic: Unitary Democracy / Subsistence / Technocrat / Frontier
+1 TALENT, +2 RESEARCH, -2 POLICE, +1 EFFIC, -1 PLANET