Suggestion: Upgrading starbase without new constructors

What if you could simply pay some money to upgrade a starbase without having to senda new constructor every time you want a new module?
I dont like that unnecassary micro if i want to upgrade my 5 mining bases with a new mining module after i reearched the tech for it.

Why not make it like one of the folowing ideas:
1) you have to pay 150 bc for a new module
then a little freighter would start from the nearest planet
once it reaches the base, it will get upgraded


2) You pay the money and the starbase will be upgraded like a ship
set to 1hp and after 1-4 weeks the new module will be functional

3) you can add more than one constructor module on a ship

4) constructors are no more "shoot and forget".
constructors work like in space empires 4
so they work like a moveable spaceyard.
they can use lets say 10bc/ round/ number of constructors to build new bases ( a bases would then cost lets say 200bc)

I m sure there are many other intersting ways make uprgading many bases more comfortable.
When reponding to this thread plz keep in mind that these numbers are numbers i just came up with and would mostly likly have to be changed