its a great design, that doesn t need too much more work, imo. resembles rogue ships very much and thats a great thing, i don t need to scan it when i see it - i know at once what faction it belongs to.
the only critizism i have is - maybe make the front part a bit more gun like? - as it is, it looks very much like a freighter. what i d see fit to a rogue gungoat is :
good armor
good agility
a ton of front arc weapons (basicly a very huge and extremely heavy fighter)
maybe half of the guns should be gunboat guns, half of them lvl10 fighter class guns. (in the end, its not a technical masterpiece like those house gungoats)
so a lot of gun barrals to the front, and an array of "normal" level10 fighter guns firing to the sides, top, bottom, back to back it up. that way, you could for example mount your tough stuff to the front for a good charging run and still fend off fighters about as good as a transport ship.
might add a little more cargo for that then - cause i d say a ship like that might be used for a tough transport convoy and the loot. so instead of 700 cargo - go for 1200 or so.
that way its very different to core house GBs. it would have comparable firepower in its front arc, improved manouverbility, same armor/shields ( don t think its good to make any difference there - apart from maybe lvl7 transport shiels - but that d be a 50% cut to other gungoats, so i guess not fair ), maybe more normal guns ( i think a gunboat has 12 guns? - maybe give a rogue one 6 foreward GB guns and 10 normal guns to different arcs ) and more cargo.
as for the design - no more wings or fins. wings? what for - that thing doesn t look like it could make an atmospheric flight anyway - no matter how many wings you add, it ll just fly like a brick. it sort of reminds me on the reaper style ships of the show "firefly (serenity)" maybe add some more bloodstains and corpses/bodies to the hull haha.