I would love to be able to upgrade certain thrusters instead of just adding more of them.
Especially smaller, more compact builds often suffer visually from too many thrusters on their hull.
Maybe in combination with a (more advanced) research system you could be able to either just increase their power output over 100% or maybe research higher tiered varants similar to the tools we already have.
Because you save blocks/space on a ship with these thrusters they could come with
- higher construction costs
- rare material costs
- slightly higher weight
- moderately higher power consumtion
- maybe even another exhaust flame
I think tiered or tuned thrusters would make an excellent addition to the upcoming block progression for survival!