I agree with the OP.
Daggers are currently only balanced around the assumption that those using them will have the Backstab talent.
They do less damage than their Str counterparts, but require the same amount of AP to attack.
Daggers should be on-par with other 1 handed weapons without a mandatory talent.
As to "how" to fix this, there are a few options. We could remove the Backstab talent and incorporate it into Daggers, as the OP suggests, or Daggers could be buffed to increase their viability outside of Backstab. This could be a flat damage increase, or it could be something more creative.
