I like the designs
Spoiler
(except the upside down Onslaught I'm sorry)
, and some ships like Explorator, Wolf and small Invictus fits really well into vanilla, so I don't mean to sound only negative when I say that a lot of ships seem to be overpowered at the moment.
Most have too many OP, while otherwise pretty on par with vanilla.
Grox - has nowhere near Ox's logistical footprint, while being a double use combat + logistics ship. The other addition - capital combat hauler has appropriately increased logistics cost, so I feel like it would make sense for combat tug also being more expensive to run than normal tug.
Invictus XIV - ridiculously OP, as other users mentioned. IMO it's way too strong even if you replaced it with normal 10% armour, because just having 6 large missile is kinda bonkers. In this state (or even with 30% armour) it's taking forever to bring down as an enemy, and ez win as your capital.
Like don't get me wrong, it's perfectly fine to mod OP ships, but then you probably shouldn't call it Vanilla+