Seems like bastard swords are pretty useless with a shield. So here's my thought, why we shouldn't make it viable in the one handed mode as well.
-The mode change will be done by pressing x button(by default), instead of carrying a shield or not
-It will only have thrust, which uses polearm animation
-Despite the attack animation, it will be a one handed weapon in secondary mode. Thereby will use one handed wpf. (Just like flamberge uses pole animations, but uses twohanded wpf)
So the stats will follow:
Two handed stats will be the exactly same.
Bastard Sword
Twohanded/Onehanded
One handed mode:
Speed Rating: 93
Damage: 28p
Reach: 101
Heavy Bastard Sword
Twohanded/Onehanded
One handed mode:
Speed Rating: 91
Damage: 31p
Reach: 105
Longsword
Twohanded/Onehanded
One handed mode:
Speed Rating: 90
Damage: 31p
Reach: 106
I think it would add some diversity to the game a bit. From what I know, these swords are used in that technique with a shield. Though I might be mistaken.
Stats can be changed as well.