I m fresh in this game and I too regret the absence of dual wielding.
Already for one thing , I have nothing to put on my second hand when playing a backstabbing char. SO one slot is just out. Ive even considered putting a stupid outdated shield with few str erequirement but that doesn't satisfy me. I already have the look n feel of a soldier when playing my 'paladin' char and I would like my rogue to look like 'le ninja of death' as stated by the very rude and obv not very smart kriss in previous posts.
Same can be said about unarmed.So yeah more fighting style is good for game diversity , makes you want to start the game over and over trying different chars. Better longevity better product with not so much effort.
Lots of ppl went with their idea of 'how that might work' , I'm not much for the -hit or -ap, instead I would suggest to get an increase in str/dex requierement. One had to be very precise to fight with two light weapons or incredibly strong to fight with two 'heavier' one. So you could dual wield with weapons that have lower requierement. So you would need 8 or 10 dex to dual wield with two req-6-dex weapons.
