Just a minor update, calling things Slugshots was my mistake - I keep forgetting that the localised names and the internal names aren't always the same

. Updated OP to refer to Frag Cannons, they're the same thing.
And a brief word on Fixed vs Gimbals - this was obviously going to be one of the hotter topics, I would ask that people reserve complete judgement until you've tried it though. The goal isn't to make gimbals useless, I think it is a smaller nudge than it sounds. As with all things subjective though, it needs to be tried to be properly gauged. For reference, looking at the stats of what people are currently using (trimming outliers to include only recently flown ships, an a couple of other exceptions), when people have a choice between fixed and gimbals
more than 75% of players have picked gimbals, which is high enough that I think it signals something not balanced right.
Continuing to read the thread, but there's a lot to try and answer.