Hubship feedback:
Pro: it's an hilarious end game flag ship that you field when you can afford the fuel and supply cost of doing so, in short it's awesome. It fits well in the center of big fleet battles where you expect to lose ships.
Con: it's DP cost means you can't really field a fleet for it to be the center of. It tries too hard to be a jack of all trades and you end up with an expensive slow carrier with poor firepower. The weapon arcs aren't good and considering most ships will be able to just run away this means you end up just flying around alone while the enemy fleet picks apart your own heavily out numbered fleet.
The DP needs to be 65 at most, the core needs far better flux for the fact that it's shielding the entire ship--this would be a good fortress shield scenario. The firepower problem needs to be solved by more variants so you could dedicate it to ballistics, missiles, energy, or a carrier. Simply slapping on new paint schemes and cycling the weapon mounts would give you a flagship of every flavor. You could give each variant a built in hull mod too, give the energy focused one fortress shield, missile focused gets missile autoforge, ballistic would get heavy ballistic integration, and carrier focus could grant another 2 hangar slots. The built in weapon could be some fun too, a big siege laser or long range siege cannon.
A quick fix would be to simply give the large mounts universal with 180 arcs with some unique 0 OP cost hull mods that are exclusive to each other. It's a delightful concept and a nice design, it'd be a shame to not utilize it.