Please make a mod for me since I'm a modding noob but I think it will be really good. The premise is that there are generic templates for units available for all factions, e.g. Heavy Lancer or Archer, with several levels for some of them. These can be recruited through the governors palace or equivalent.

Secondly there are 16 Mutually exclusive 'camp' buildings which provide significant bonuses of each type in either +5 distribution or +3, +2 distribution - as in +5 in either bladed, simple, missile or armour or +3 in one of those and +2 in another, from a single building. The choice of which of these buildings to build determines the stats of the units you build, so you can customise which units you build in combination to which building and so which bonus distribution you get. This would make 16 buildings. They would be fairly cheap and take one turn to build, Of course the bonuses would apply to default units, unless you find a way to make it specific to the new generic units only.

So basically you can build whatever army you like, and choose what types of unit are stronger and how based on the selection of building you make. Its not perfect of course but I like it. The stats of the generic units would be carefully balanced to account for the extra stats.

The Units would be, give or take:

Legionnaire
Phalangite
Hoplite (uses hoplite phalanx, basically a sheildwall sort of formation done in a number of other mods)
Skirmisher
Archer
Slinger
Axemen
Lancer
Sword Cavalry (like arab cav but medium armor, like sabre cav)
Light Cavalry
Heavy Lancer
Heavy Axemen
Heavy Skirmisher
Theuroporoi
Charior
Heavy Chariot
Heavy Bowmen
Elite Slingers
Heavy Hoplite
Heavy Legionairre
Elite Phalangite
Elephant
Heavy Elephant
Light Phalangite
Levy Legionairre
Levy Hoplite
Warrior Spearmen
Elite Warriors
Elite Warrior Spearmen
Hunter
Javelinner
Light Javelliner
Heavy Javelinner
Raider (a better armoured cilician piriate kind of unit with proper formation)

The building names could be:

Missile Camp (+5 bonus to missile)
Simple Camp (+5 to simple)
Bladed Camp (+5 to bladed)
Armour Camp (+5 to armour)
Melee Camp (+3 Bladed, +2 Simple)
Melee Camp 2 [or something original] (+3 Simple, +3 Bladed)
Alternative s3, b2 (simplified to be concise)
Alternaitive2 b3, s3
Protective a3, simple 2
Protective2 s3, a2
Composite b3, m2
Composite2 m3, b2
Sentinel m3, a2
Sentinel2 a3, m2
Guardian c3, a2
Guardian2 a3, c2