Hey Strogg, welcome to the forums.
Indeed new weapons would be great, and the examples you bring are great, but unfortunately i doubt Styg will be adding any more due to how much it would cost.
Does the development kit/engine he's using require a more expensive licence to add more content?
Whats wrong with going with a high dexterity stat, for the cut throat feat, if you are already doing a "dexterity based" melee character?
I've had time to think about it, and the stats can balance out pretty evenly, as my new stealth character is 7895533. I guess I'm just used to RPGs like Baldur's Gate and how their rules set apart different character classes.
I believe you are being inspired by the Weapon Finesse feat from D&D that allows a character to add his dex modifier, instead of his str modifier, on attack rolls ( to hit chance ). And although this feat provides more hit chance, with melee weapons for dex based characters, it wont grant them more damage. So if they have a low strength stat, it wont do them much good (unless you are going for something like a duel wielding kukri critical build).
You're exactly right, I meant to say hit chance (because really, the dagger and combat knife don't really come off as strength weapons), but yeah, I've had more time to think about it and that type of mechanic doesn't really fit underrail, since you can pump up strength/agility/dexterity with little trouble.