what is "zerg rush" about having large battles ?
Only that zerg (or Tyranids) usually associated with hordes, nothing more. A lot of units, regardless of game sometimes, ironically, called "zerg-rush", even if we playing Red Alert and there are like 50 mammoth tanks.
i m not saying you should be able to control every single soldier - all i want is (turn based) battles where a unit is represented not by 4-6 soldiers but lets say 40-60. the difference is mostly a cosmetic one giving those games a much better atmosphere.
I have no problems with that, since it's cosmetic feature, and battle won't turn into long, jaw-spraining periods of exchanging moves. Unless, of course, we actually would be able to unite several smaller units into one, and operate that increased unit as one, just to reduce micro.
From your reply I got impression you want to increase number of actual fighting units, and, if I'm not mistaken, FE tactical fields aren't that big to accomodate all of those units, that's why I remember Fantasy wars reinforcement - you initial cells allow you to place 12 units, while you have, say, 30. So you placed and moved your first 12, freed "entry" area, and then placed more units. With certain units, or even characters features, you could place them not in just your entry area, but at flanks, or even behind enemy lines.
Yet I'm not sure increasing number of actual units active during combat won't brake game's pace - since larger armies will result in longer combats, and having "trickster" units, ones you can't see during estimation, or ones you can deploy outside of your entry area, that could change gameplay.
i personally think Braveheart or Lord of the Rings would be pretty boring movies if the main battles involved 12 dudes on each side. as much as i love fantasy strategy games its always an immersion breaker seeing supposedly large battles being fought by just a few guys, no matter how good those games otherwise are.
Depends on specific game, I suppose, or even specific mission. I admit, seeing Gamebryo "war" with like two dozen of men figthing each other, and that's called full scale invasion, it's just hilarious, ArmA's several hundreds of units strong battles are much more believable, as well as old Cossacks are way better than Age of Empires. But there is always technology problem - will that particular engine be able to handle those hundres of troops, even when united into bigger entities (companies, battalions, etc)?