A new combat style, with accompanying weapons, to allow knights to choose to sacrifice the use of a shield for other bonuses.
Swordsmen might dual wield smaller swords and possibly daggers?
Gunners could dual wield smaller guns and maybe get rifles?
Bombers....idk, but something new.
@Mr-Zorba
Please use the search bar, located under the big blue navigation bar. You'll find quite a few suggestion posts about Duel Wielding, most of them more coherent than your current suggestion.
Are you, by chance, new with forums?
Any case, I have to say NO. This isn't Runescape; we don't need people with daggers for shields. Having 2 weapons to control requires attack mechanic changes. You have provided absolutely no details here which are helpful or new.
Any case, you're beating a dead, dead horse by suggesting this. And I'm beating a dead horse by beating your dead horse.
Graveyard this, and put it to rest.