Nice suggestions. Shotgun shouldn't go fullscreen. As Cage Redfield stated, they shouldn't turn it into a fireball. Even though an actual shotgun shell could go the length of fullscreen, shotties are notorious in video games for having exaggeratedly small range, but good spread. So at most, I agree with Lord Hollow on it maybe having 2, 1, 3's range. It seems to have a pretty decent hitbox, but since it does have dangerously short range, it should have great spread. Almost as good as MMH's bf3. So that say if I decide to use shottie at sweep distance, my opponent can't late jump it. The hitbox should be an arc around Lobo's head and they should get clipped. Same with low shot. Give it a big hitbox, but don't give him some huge combo off traited low shot.
Arc of hitbox talk takes me into acknowledging Chaosphere's suggestion for 2, 1 but moreso his super. Omg are you serious?? How did they drop the ball on that? It's an upward hitting chain that descends. You are supposed to be able to legit use it naked and force people not to jump at a certain range. But instead the hitbox on super's chain is like a piece of thread. I've played so many fgs for so many years with similar supers that I still get suprised each time that I raw it out in certain situations and even opponent who thinks they're caught is like "damn dude." You mean to tell me that other characters on this game can snag you with the air around their head but Lobo can't with a fucking chain? NRS please fix.
Finally, I don't believe he'll get trait cancels but at the very least his trait needs to pierce armor. Why the hell even have nuclear shells then? Lobo should either only carry nuclear shells the entire time and trait should've been something else entirely, or they should do something REALLY worth me taking the risk to load trait by me having to be completely outside range or having to intentionally drop a combo in order to link into trait.
That's all in my personal opinion, nothing too outrageous. He already hits like a truck and has tools. He just needs subtle changes to allow realistic access to those tools in competing with certain one-sided matchups, without the player having to be psychic. If he's made any "friendlier" or accessible, he'd be OP as fuck. And also not as fun.