TL;DR
Allow Fusion generator to flow into Fusion Reactor as an option instead of removing it completely.What?
Add a checkbox in Fusion Reactor to allow plasma coming from Generator or a checkbox in the Generator to allow flowing into Reactor whichever is easier.Why?
Make it more consistent with other entities with pass-through fluid mechanic.Also, personally, it let me make a better fusion power plant. All I really want is the option.