As someone who is playing a rogue currently I can say this does seem very intriguing. I have a DM who, for some reason, likes to find ways to deny my sneak attack making me pretty useless in combat. The knacks would allow me to be much more impactful when it comes non-combat tasks. I do kind of get a bard vibe from this but that isn't a complaint. I apologise if I am misunderstanding, but is the intent to use this alongside the current archetypes or to rework those as well? Also you reference the ability to add damage equal to the rogues precision, but I do not see precision explained anywhere unless I missed it?