About horse movement:
- Alternative controls are bad, really, because you only have your fingers with which you have to both ride and attack, you can't control anything over your computer with your legs, thighs and such. Infantry also has counterstrike movement controls... eh.
- If you want more sensible movement, then less maneuver (for arabians and stuff, too, they get more maneuver then the fast horse line gets speed, and ride like go-karts), more speed (possibly a triggerable "charge"?). Significantly less maneuver at high speeds then now, also slower decelerating.
- Terrain (uneven, obstacles) should have more impact. Oberyn had a good suggestion about stakes and such doing damage.
About generic balance stuff:
- Running into chambered spears should cause damage.
- All variants of unarmoured horse (especially heirloomed ones) have too much HP, so charging into a spear / pike / getting shot up is not penalized as much as it should be. Unarmoured horses being able to turn and ride away after a pike/spear stab should not be the norm.
About horses charging:
This suggestion is good:
" give them a charge mode with cooldown, having a high maneuverability penalty but a great speed bonus whilst their basic speed is nerfed greatly
(example: basic courser speed 40, maneuver 41; charging speed 50, maneuver 31)
-make their corpses crush trough and in return make them a lot more fragile vs anti-cav weapons aaaand make the rider take a high amount of damage."
Generally speaking, if you want horse charge to become something nasty and counterable with pikes/spears (or well placed ranged) but not with just any random weapon, then horse corpses should do damage; in that way, without support weapons you will get hurt. However, if they get the ability to charge properly the "ninja" capabilities have to go down to compensate, naturally.