The Spartacus unit is a Great General that has already been attached to a unit, which is actually a new unit called "Gladiator".
The Gladiator is unbuildable. The Gladiator is an Axeman with only +25% vs Melee, and 1 First Strike Chance. This may change, it was more to test out some concepts. I want the unit to be a "skirmisher" type unit. Weaker than a standard military, but to have some use. Every Combat Victory this "Spartacus" Unit wins, there is a 50% chance to "Recruit" an additional Gladiator. In this way, one can build an army of Gladiators, similar to the history of Spartacus and his uprising.
I toyed with the idea of making this a Barbarian Hero Unit, that will cause some problems for a Civ that build a Colosseum (not the first, a random one). However I felt it defeated the purpose of the Mod.
No that's a great idea, there should be more penalties/prizes and interaction at home for our actions in the game. Slave states have escapees. Bandits could spring up for countries drawing high level of trade revenue, and Rebels where you have multiple religions/cultures. This balances more powerful states.
I'm working on a Great Generals list with individual ratings that grant special abilities, and are associated uniquely with their particular culture. And if you upset them enough, or go against their basic alignment; they may be receptive to counteroffers from other states. This could be on the basis of religion, acts of atrocity, casualties, or regional loyalty to their home town. Great Generals should be able to pull coup d'etat after excessive casualty rates, but they don't become your enemies, it just means the AI takes over some of your armies till the general dies.
Individual units should have names after the city they come from. When a city's units win, war unhappiness goes down and unit production up. When they lose, it first stimulates an aggressive response. If they continue to lose, the city may simply withdraw from the war effort, meaning the city and its cultural boundaries becomes a neutral state, until something else changes.
Each nation should have a different leader for each era, and become represented by succeeding dynasties each with their unique units for each era, : Ancient - Bronze Age - Classical - Imperial - Medieval - Renaissance - Gunpowder - Industrial - Modern - Near Future.
Cultures may not have a unique dynasty for each era. Example: Greek
Ancient - Bronze Age - Classical - Imperial - Medieval - Industrial.
Dynasty: Minoan-Achaean-Classical Greek-Macedonian-Byzantine-Independent Greece.
Units: Cretan Archer & Greek Bireme - Hoplite & Peltast - Trireme & Spartiate - Phalangite & Companions - Cataphract & Fire Dromon - Evzone & Averoff (cruiser).
And in each era, your empire can revolt against you entirely. This only happens with excessive losses in battle, extreme unhappiness, or having your units on strike two turns in a row, or some combination of these. At this point the AI takes over and tries to fix the mess you are in, while your direct control is limited to the capital and any units in its cultural boundaries. But you still get to choose civics, research, alliances, and religion. After a time, you may regain control of your empire, or by the next era, but civilizations did not evolve without civil wars.
I know this is a pretty tall order- and it would be hard to do for every civilization, but would be ideal for a Classical, European, Far East or Old World scenario.
Finally, nearly all ships should carry at least one unit, and naval battles up to the gunpowder age need to include the boarding maneuver. Those ships with more units have a better chance of defending or capturing the enemy ship in a boarding attempt.
I think the concept of taking prisoners would be great, when the disparity between unit strengths in battle is too high. These can be kept as slaves or returned for money and favours.
And dynastic marriages are a way to improve your standing with other empires. If you are trying to curry favor with an antagonistic power, a small dowery is required. This improves the attitude of the state towards you, as well as any of its great generals. Failing that - you can also offer hostages (great people) for a promised behaviour, returned when the terms are met, such as ceasefire for 10 turns, declaration or cessation of war with other parties, adoption of religion. If you renege too soon you lose that hostage to the other power.