I suggest you to add CT/TE knives, and for this, I mean: when you type /knife, it will open a menu with 2 options: CT knives and TE knives, so you can choose different knives for both teams (I know you can change them anytime, but it would still be nice, in my opinion) and save our choice by SteamID (as panipani said it is buggy).
Thank you for reading this.