I played Panzer General too back in the day and its sister games aswell People´s General etc.
There seems to be TWO problems here, the Stack of Death (Doom) on the stacking side and also problems on the 1upt side, how do you solve the problems and create a game that is acceptable to ALL?
Panzer General had 1upt and I remember it had problems with roads getting clogged, units couldn´t get past each other and reach the front line as all roadlines were completely packed with units, especially artillery and truck mounted infantry were in a bad situation since they were stuck on roads, you had to upgrade your infantry to cross-country capable halftracks or similar vehicles if you wanted to get anywhere.
In Civ 5 units can swap tiles, so that´s a step towards solving that problem, but will it go away with that or will we see armies stuck on roads again?
Another problem comes with space, how are you going to fit a massive invasion army onto England or Japan? The answer is, you DON`T, there simply won´t be enough tiles for your units and theoretically this places a maximum unit count on the game, there can only be as many units in the game as there are tiles on the map. What if you mod the resource production of ALL tiles up dramatically so that everyone will have MASSIVE amounts of resources at their disposal?
Eventually everyone will have massive armies which will fill up the entire map and no one can move anywhere because there are no empty tiles left.
Yet another problem comes with multiple unit movement, in Civ 4 you can select multiple units at a time and move them in a stack, how are you going to do that in Civ 5? There HAS TO BE some sort of way to move multiple units at a time because armies can get very large and it´s laborious to move them one by one even with a small army.
I would propose a solution, an idea I got from a Paradox game, Hearts of Iron.
They have a STACKING PENALTY, all stacked units would incur a -50% or more (-75% or maybe even -100%) penalty to their strength, so you could not fight in stacks, you would have to deploy to a wider battle formation on the field to do battle and while you do that (it would take a couple of turns to move your units to a formation from the stack), the enemy can fortify and prepare or lauch a counter-attack against your stack, it would make the stack of death VULNERABLE, forcing everyone to deploy to a battle formation which is the idea of the 1upt system, to have field battles instead of stacks going at it.
With stacking penalty you would have to protect your marching stacks with flanking guards and scout ahead of the army so your precious stack doesn´t get ambushed while moving.
In essence with STACKING PENALTY you would have the best of BOTH worlds, you would have field battles like in Panzer General and you would have stacking to allow you to place large amounts of forces in small spaces like islands.
City defence will be different in Civ 5, it won´t be done by stacks of units, but by the city itself, which will have hitpoints and organic defence, you can "merge" units with the city giving it more hitpoints, so this would take care of city defence in a stacking penalty scenario. Hopefully cities will have "active defences" so they can hit back with artillery etc. at the sieging units.
I think stacking is NECESSARY for large armies and it would be useful to have it in the game, but the SoD problem needs to be solved and I think a stacking penalty would do just that, giving the benefits of the 1upt system (field battles) WITHOUT removing stacking.
There´s my idea for a solution, do I get any votes?
Cheers!
PS.
"Support Fire" from PG would be a good idea, all artillery units in range would immediately fire to assist a defending unit, making it a priority to neutralize enemy artillery before attacking. Air support could be done in a similar fashion, you could have a fighter hover over an area and fire in assistance of defending units or attacking units.
Manpower and supply from Paradox games make sense aswell, a small nation cannot support an army of millions (except by conscription).
Also, I would like to have multiple improvements on a tile, maybe two plus roads, it´s a question of graphics, what looks good, the graphics have to go together well, in Civ 4 a farm and a village could very well go together without looking bad.
Has anyone heard of Buckypaper? (look it up in wikipedia) A new nanomaterial that promises to be light, thin as paper and 500 times stronger than steel, imagine bullet-proof vests or army clothing made of buckypaper, you´d be impervious to bullets, maybe in the future AK-47´s will be obsolete.