I realised that it was quite simple to have the recent system info view trade/economy comparison depend on some "trade analyser" being installed on the ship, as a computer module I thought, giving it 0t of mass.
This could be made more general:
Each ship has a computer, with a fix number of slots taking "modules" each of zero volume or mass (or mass=10g, volume=10cm3, if we want to be very picky).
So these computer modules we could fit to the ship to improve data handling would be:
- - Autopilot (its mostly software, and some hardware accelerated calculations)
- Trade analyser (some proprietary software/hardware with trade info)
- - Radar mapper
- hypercloud analyser
- - Galivac
- MAL 9000
- Shallow thought
- Or wiki/List_of_fictional_computers