I dont know guys...really, you just coming in and just making statements about what coding work for it needs to be done is pretty pointless.
If we are going to engage in just throwing around empty statements this can go into all sorts of directions.
Like me saying you could just add pink elephants to the game. Because.
Its all completely nonsensical. Neither me nor you have any idea whatsoever about what and how much coding it would require. You know who does. So stop pretending its you.
The fact is that doing it just for daggers would be less work overall - for the actual reasons i numbered and because it would concern just one type of builds - the rogue skills - and that would be appropriate for the whole game - and it would play better.
While it would be more believable, plausible, elegant, stylish and cool.
You dont have to like it. You may want to have dual wielding for all other or most other weapons.
Just dont pretend you know anything about the code and dont make fallacious false statements in some attempt to force duel wielding for everything.
Cause its really annoying.