Theres been a lot of talk in Tomi Says Code of Honour Thread about using unit max's to balance out gameplay and straightjacket people into picking more balanced/realistic armies.

One possible solution that I believe could work on a small scale is to introduce tabletop wargame style army lists which could be used in tournament games or for the occasional one off.
Of course one problem is that people would have to be made aware of what the lists were before the game started, and it could all get quite complicated.

But anyway, heres a sample army list for discussion purposes:

Key - the first number is the minimum number of units of that type that must be included, the second the maximum. Where a + sign appears there is no maximum on units of that type. Units types in brackets, if taken, must be taken as a replacement for the unit they appear alongside, not as well as.

THE GREEK CITIES (6000-10000 denarii games)

Peaseants: No restricitons
Millita Hoplites: No restrictions
Hoplites: 4+
Armoured Hoplites: 0-6
Spartan Hoplites: 0-2
Peltasts: 2+
Archers: 0-4
Heavy Peltasts: 0-4
Incendary Pigs: 0-1
Greek Cavalry: 0-4
Greek General (or Armoured Gen): 0-1
Millita Cavalry: 0-4
Ballistas: 0-1
Onagers (or Heavy Onagers): 0-1
Rhodian Slingers: 0-2
Cretan Archers: 0-2