I am a bit of a history fan, so I found he current cavalry implementation a bit bare bones.
Personally I feel horses shouldn't be just equipment to be added, which is how it is treated right now.
I feel horses should have their own associated weapons, like the Lance, to go iconic, or the Pick. On the other hand I'd rather not having Two haned weapons being available to mounted units, mostly from a realism POV (yeah, I know, fantasy game), though if those weapons, powerfull as they are, would be handled from a mount, they should have some penalties or some such, in short I'd want to see things that would make the horse, or warg, be not a piece of kit, but a real modifier to the units, including the option of armoring both (probably a deeper tech tree for this) at the cost of providing less encumbrance relief, for example.