Re: Do starbases need supplies?
 

The latest P&N v3 for PBW does this sort of thing, but a bit more extreme.

Bases have limited supplies, but a significant supply storage ability.

Resupply depots were also removed, so bases with solar panels become your source of supplies.
In order to keep a big fleet moving, you will need to have a significant investment in support structures. Should slow down attacks a bit, and help defenders recover from a loss, IMO.