The retail model just had a single dockpoint along a spur, I added 3 more for funsies.
A wise decision; I approve, especially since the Ganymede's write-up says that it's capable of repairing five ships at once, so
dropped the ball by giving it only a single dockpoint. (But then, that's not
's only oversight by a
wide margin...)
And I don't think it would make sense to have a dockpoint on the double prongs. Aside from the obvious lack of geometry and texture, I envisioned the double prongs to be something like a gantry, for robotic arms to travel along and do stuff like replace armor plating and other large things. The ship being repaired or constructed would always be freestanding from the station. You can kind of see a track for the prongs to travel up and down, and the whole assembly could rotate around so it could service from any direction. But you're free to add your own dockpoints if you like!
Oh, they're essentially giant robot arms? They looked to me more like giant gantry vise/clamps that would extend or retract as needed to clamp down and secure ships that needed to be repaired. Of course, there would be no way to actually animate those arms, never mind find a way to get dockpoints in those locations to function correctly. But now at least they
look cool.
And as to how a Hecate could fit inside... I've thought of the Ganymede as modular, so its four pieces could come apart and be installed like a collar around the large capital ships.
This actually makes a great deal of sense for ships that are larger than the Ganymede's inner circumference: because once those ships were completed, there would be no way to get rid of what would essentially become an unremovable starship
dog collar.