Just remove those bloody bucklers ffs
Or make them useless against anything ranged, and have the same HP as tier 1 shields.
The wrong thing with shields like they actually are in the game is that allmost everyone on foot uses hurscarl, trolls use bucklers, many horsemen use those fugly norman shields, and... that's all. Very few people wear other shields, because even if they are more stylish, the stats are imba.
For example, if we tried to match more with history, hurscarl shield should be utter crap breaking in three hits, and board shields should replace the current hurscarl. Round shields should in general be more easily breakable, like they were IRL (round shields were used in early middle ages, and certainly not with iron or steel reinforcements). Heather (and probably kite) shields came later, and were simply better in a variety of ways.
About shields protecting from all sides against ranged. For the buckler and the hurscarl it's true. But for all others, it's definetly the opposite. I often see myself and other shielders shot trough their shields, by arrows or even throwing weps. And given 95% of the cRPG players now generally play a char with at least one ranged weapon, well... we could hope SHIELDS can protect someone from ranged attacks.