Shotguns are viable for competition, but they're not the easiest weapons to use depending on the situation. Even when you have Auto Sighting turned on, you need to know working angles and timing your shots well. They along with the Kamal especially are very good for easily punishing players trying to close in on you in general, though. If you want a more simple set up, then assault rifles are good to pair up with machine guns. MR-R102 if you want huge amounts of ammo, or 04-Marve if you want huge damage. The MP-O901 is a bad missile by itself, but is good when paired up with the 061ANRM relation missiles. You obviously can't do that with White-Glint/Core though, so you're better off using something that hits hard by itself. Either of the VTF missiles or the MP-O203 can work wonders without relations helping them. If you plan on using OB, then don't use the AA version of Judith. AA in general takes very specific kinds of builds to not be a last resort tactic in 1.40 because of how long the recovery is. All of the AA OB parts also have very bad boosting functions compared to the regular ones, to the point they're rarely ever practical for it. You shouldn't spread out the tuning when it comes to Rectification and Stability. The numbers go to the same function, so it's always best to put all of them into whichever one part has the highest number since it scales more. Also, you shouldn't put any into Boost unless it's Vertical Thrust. Always put them into Quick Boost instead. That's all for now. I can help you more with frame synergy, internals and weapons though. I'm sure nob has or will say some things too. He's the only other person I'd recommend listening to for competitive advice.