-Shields are invulnerable to ranged except for throwing axes
Actually one of the purposes of throwing spears/pilum from roman times/etc was to render shields unusable. Naturally, metal shields are unlikely to get penetrated.
Other than that, +1, would like.
Also corpses cause damage (eg. stabbing a horse in the face while charging at you with a short weapon would be an epically bad idea). And unarmoured horses much less resistant to arrows/bolts (a high-powered shot from a crossbow at close ranges is very likely to incapacitate a horse).
Also, less silly footwork (S-key heroism in particular) and especially jumping.
Realistic armour effects, with mail already quite resistant to slashing damage (esp. from lighter 1h weapons). Light crossbows cut damage. Effectiveness of ranged weapons on unarmoured people increased, and decreased on unarmoured people.
Would play. Also pikes/spears reworked so you can't stab someone with the side of the pike, only the point counts.