One of the things I've enjoyed most is list building for wargames and I wanted to expand on that design by adding a second layer to the units.
The Idea is every unit would have four meters that can be filled for buffs. for example Fire, Water, Earth, And Air. The meters are increased based on what unit you include in the army ex: an archer unit adds air, swords men add earth etc.
The each unit then gains special abilities and stat buffs depending on which element meter has been filled, ex: knights get +1 speed if your army has +3 to air.
Theoretically, you may make choices based not only how the unit performs, but by the elemental buff it contributes to and what benefits it receives from your other units.
I'm curious if this has been tried before and how it worked out
(my search fu is weak). My concerns are it's potential complexity may be greater than intended and would be difficult for players to keep track of. Also if it seems more fitting for larger games or skirmishes since the stacking buffs may limit the battles scale that players can choose.
I like the idea of using this to promote a combined arms approach,I hadn't considered that. skewing and spamming is definitely a common issue in games.
I also like some of the suggestions to make certain units focus on buffing while others are fighters, it would open up some options.
Losing units would definitely be a problem for someone on the back-foot. I'll probably have the elements permanently tied to the general and then make his loss a losing condition. Those two things would give a losing player a chance and end the game quicker either way.