Daggers have 40-50% less damage ( stat wise) when compared to the other melee major damage dealers (mainly 2handers warfare) and require positioning.
Like this, you need positioning to be on par with 2handers, with less armor, with less AoE, and a worse damage scale ( 2 handed increasing 2 times damage and once crit multiplier, compared dual wield increasing once damage and multiplier)
just roll a warrior then.
Mobility is not an issue, warfare has awesome mobility.
Just saying
