Some of my ideas and questions

[Suicide Junkie]

Mining Vessel:
You don't need mineral storage, since whatever is remote mined goes directly to the empire, just like all production. I'm not sure if the storage ability would even increase your empire-wide storage capacity.

Fuel Station:
I don't believe you can fleet with a sat. And sats already have infinite supplies, just like bases. This would make the fuelstation useless.
If you were to use a fighter hull, with no room for engines, you could get what you want.
Players will have to beware of launching fighters in the same sector, since they will all form a group with zero movement.