I dont know how deep is ur understand of melee mechanics but officer is very underpowered (against skilled players). Officers have a short sword for melee(compared with commander or heavy cavalry),and a shitty pistol for close ranged. If u survive to the ranged fest and start a melee fight u will face mostly infantry muskets, that are longer than ur fast sword. At this point u have to block the first attack (i noticed that sometimes when u block an overhead ur weapon got stunned or maybe are lag issues), and then if the other player is backpedaling u have to block again. Blocking an sword isnt so much hard for an skilled player, and animations arent so weird, compared to native, but infantry musket overhead is a bit weird to block and can reach u for a long distance. U are fast (low weight) but infantry musket users are fast too and have a longer weapon that can 1 hit u when u have to hit 2 times to kill (with overhead).
Sorry for my bad english.
If hes backpedaling, he get some serious negatives. See when the musket bounces and does little damage when it hits? Its because that.
Its also funny that you say that a sword is easy to block by a skilled player. A bayonet is even easier to block. I would agree with swords being too slow, but it isnt as bad as you are making it.
As far as the feinting goes, is one of the core things of melee in mount&blade. They make the combat so much more interesting.
PD. Regarding the most balanced melee in the game, everyone will have an opinion. NW plays so much nicer with groups and favour much more hordes of people without skill (like me

) that still stab you to death. In other mods there is people that can singlehandlely win fights. On the other hand, Vikingr has a such nice shield combat... I havent played in a while (AKA - months), but cav used to be totally broken, though. Cav in NW feels light and hard-hitting, without being rapers of the world.
So I would say that the balance is more or less right to the general idea of the mod.