The Core Membrane is permanently consumed to block all system corruption, but leaves the system corruption bar intact. This creates two (extremely minor) problems. One, screen space is being used on a bar can no longer be changed, and two, after coming back from a break, it isn't immediately obvious that the CM is equipped. Both of these problems could be fixed at once by having a reminder that the CM is equipped replace the Sys. Corruption bar. I have made (an admittedly amateur) mockup of what the could look like. A similar reminder could also be given to other permanently consumed items, but most either directly change HUD numbers (Integrated Mediator), have immediately noticeable effects (Nav. Matrix), or aren't impactful enough to be worth remembering (Integrated Mediator).
I had this idea after a failed Command Run where I forgot that I had the CM and decided to just enter Command rather than try to get some better loot and risk getting some system corruption for the programmers that were chasing me.