I know this likely will not happen, but I want it to.
Separate Jet Engines and Nozzles:
This would change jet engine from being a two part system (Nozzle, Intake), to a Three part system. To get a jet nozzle to function you would need an intake, engine/turbine (significantly smaller than the exhaust, but not fully one size smaller. Still stays under 1.25m category if it fits a 1.25m exhaust for example) and a nozzle.
Intakes: The intake mainly governs the way air is taken into the engine. The same as now, with two new parts, and separating of the Goliath into intak