Just some brainstorming...
most likely a long term plan, but it would be cool i guess.
What if we could have multiple motherships?
Like 3 for one faction. But you could only build one, which would give specific buffs and nerfs to whole fleet.
Your starting base/mothership would be a big station which could build any size vessel including biggest things.
And you would not have mothership at start.
Mothership would more like big support vessel which still could build up to destroyers. But bigger stuff would be builded from station/outpost.
We could still have shipyard as it is movable, it has it's beneficts of not being stationary.
i am thinking to dump vanilla hiigaran mothership and make own 1 with more traditional long design.