This may have been suggested previously, but I couldn't find it by searching....
One of the basic elements of Diplomacy game play is that all units have equal strength. One army is equally as strong as any other army, which is equally as strong as another country's fleet. This greatly enhances the game’s playability while sacrificing a degree of realism; in the real world, some combat units are simply more powerful than others. I was thinking about how the reality of unequal strength could be reflected in a Diplomacy variant without becoming unnecessarily complex, and came up with the following.
Rules:
If a unit retreats, but is not destroyed, it goes to half strength -- reflecting the losses it suffered which led to its defeat. (The icon’s coloring could change from solid to striped-with-white to reflect its status.)
On the other hand, when a unit forces an enemy unit to disband (or to retreat and then to destroy one of its units in the Build phase), the attacking unit's strength increases by 50% (let’s say because of heightened morale and a boost in funding from HQ). (The icon could be haloed in red or gold to reflect its powerful status.)
When it comes to the effects upon play, it’s all mathematical:
Two lesser-strength units = one normal unit in strength
(0.5 + 0.5 = 1.0)
So one normal unit can dislodge one unsupported lesser-strength unit
But a lesser-strength unit supported by another lesser-strength unit cannot be dislodged by a normal unit acting alone.
Two normal units together are still stronger than one hyped-up unit
(1.0 + 1.0 > 1.5)
A lesser unit and a normal unit together = one hyped-up unit in strength
(0.5 + 1.0 = 1.5)
But one hyped-up unit acting alone can dislodge one unsupported normal unit, or a lesser unit supported by another lesser unit.
A hyped-up unit supported by another hyped-up unit (1.5 + 1.5) has the strength of a normal unit supported by two other normal units (1.0 + 1.0 + 1.0)
And so on.
A lesser unit can regain normal strength by successfully attacking and destroying another unit, and a hyped-up unit can be forced back to normal strength if it’s dislodged. If we really wanted to be cruel, we could say that a lesser unit that’s dislodged would be forced to disband, even if retreat would otherwise have been an option.
I don’t have the computer knowledge to set this up online, but once in-person play is a thing again, I might bribe my friends into playing it through with me to see how it goes in practice. In the meantime, grateful for any thoughts / concerns / tomatoes flung in ridicule / insights / etc.