Several suggestions related to the logistical Hub modules:1) Reduce costs and sizes of Refuelling Hub and Ordnance Transfer Hub.Currently, the costs and sizes of the Hub modules are ridiculously out of proportion to their benefits. The Refuelling Hub is 200 times as large, and 240 times as costly, as the basic 50,000 LPH Refuelling System, and the Ordnance Transfer Hub is similarly out of proportion with respect to the Ordnance Transfer System. Unless players are regularly trying to refuel or reload ~200 ships at once, there is no way these systems are worth their costs outside of a very narrow use case where a very large fleet must be refueled in a very big hurry, and even then it is probably more cost-effective to have a fleet of numerous small-to-medium tankers with regular Refuelling/Ordnance Transfer Systems.
If the size is desired to remain the same to limit these modules to space stations only (but why?), then the cost should still be reduced to make these kinds of stations economically feasible.
I currently reduce the size and cost of both Hubs by a factor of 10 and this at least makes them usable, if not necessarily economical.
2) Introduce a Cargo Shuttle Hub component.This is a minor thing, but it would be neat to have a hub module for MSP transfer/resupply to match refueling and reloading. Could also be useful at DSPs for inter-ship cargo transfer hub stations.
3) Allow "Refuel at Refuelling Hub" conditional orders to function with Refuelling Systems.The main motivation here is to enable smoother automation of survey ships. Survey ships are, I would guess, the primary users of the refueling conditional orders, and they usually operate individually, so it is silly that we cannot simply position a tanker at a suitable position in space to handle this. If suggestion (1) is taken the problem becomes less drastic, but it is still IMO very silly and even requiring a 10,000 ton module for tankers that are ~45,000 tons is not practical.
4) Allow Hubs to function like their associated smaller systems and transfer materials to colonies.Per this comment. Again, it is a rather silly limitation, albeit easy enough to work around for the cost of +10 BP and +500 tons on an already large vessel, so admittedly this one is not very urgent.