In Demons' Souls, you can dualwield shields and people have been known to dualwield them IRL (typically smaller shields of specific types). Use one for blocking, the other one for bashing. My point is that it's neither undoable nor unrealistic.
So I've given this some more thought, and I think using two shields just might work if executed properly. Here are just a few ideas that would make it compelling:
- A standing bonus to your Damage Resistance whenever two shields are equipped, essentially making the shields extensions to your Armor/AR.
- When blocking an attack with two shields at once, some damage is reflected back to the attacker.
- When shield bashing with two shields at once, extra bonus to damage w/ a chance of knocking down your opponent.
- A special shield clap attack with bonus damage and a chance of disarming your opponent.
- A running shield charge that knocks back/stuns lower level enemies that are caught in your path.
- A spinning whirlwind shield attack, bonus damage, that can disarm and/or knock all enemies within a given radius to the ground. Penalities to your stamina afterwards, with maybe a vertigo effect depending on your agility or acrobatics.
Just something to think about. Devs are unlikely to do this, I guess; but a modder totally should. I think it would be interesting.