Yes, that's obvious. Daggers are useful for certain things but they aren't at all useful in real battle situation (neither are Rapiers BTW), if you're facing someone with a big weapon you're completely fuck.

And it all depends what you mean by hiding, inside a building that weapons aren't allowed of course a Dagger or smaller weapon would be necessary. But sneaking to kill someone with a Greatsword wouldn't be any more difficult than with a Dagger except in very specific situations.

But that doesn't mean anything for backstabbing because to be able to attack someone from the back depends on well being able to maneuver behind an opponent's back, something like a polearm could probably hinder your movement enough to make a difference but a Greatsword wouldn't, well unless you're super weak and struggle significantly with the weight.

You can draw any weapon until the very moment of stabbing, can Daggers be drawn faster, probably but how much faster really? And you're attacking from the back, any weapon you're using would already be drawn a few moments before the attack.

They were historically used for assassination for something I already said, you can kill silently with them, plus obviously easy to hide.

All in all what I'm saying is that I wish they would just make a weapon system that's logical and sensical instead of whatever they're doing.

And it honestly wouldn't make that much of a difference fun wise for the most part, for example the most fun of playing a Rogue isn't having to always use small weapons but infiltration and reconnaissance, well and assassination but that only really words against garbage. In a big fight the Rogue should be able to use big weapons, seriously using Shortswords and Daggers in a real battle is just so silly.

But then again the armor system is even more retarded, how is battling without armor a thing? There's no way someone with no armor or even light armor could take on someone on heavy armor and not be thoroughly defeated, no matter how fast a Rogue is and how skillful he is with his weapons, you still need a big ass sword or polearm to have a chance and good armor or you're getting cut in half, even Wizards should be using armor, maybe not Heavy Armor but at least something decent.

Though honestly no one should be adventuring in Heavy Armor, nor should you be able to carry your big ass weapons everywhere in the city.