Well, I figure I’ll add in my 2 cents, for what its worth. This will be a wall of text, so be warned.
The TL;DR of the suggestions are: lower the alarm thresholds, reduce the amount of space required for an RMBK to function and condense controls/ increase the tolerance of the reactor at critical levels.
First, something I’d like to see that would be easier to code in: lowering the alarm thresholds.
Currently, the alarm thresholds are a little too high. They do not give you enough time to recognize the issue, troubleshoot it, and fix it in such a manner that it will stay fixed for most times. I suggest that any coolant pressure above 75% trigger warnings. This should hopefully give enough time for the engineers to get there, figure out why the pressure is spiking, and deal with it.
Likewise, an alarm warning triggering when the power is 85% and rising would probably prevent a few issues.
The way I see it, the RMBK has two main issues aside from the alarms, I’ll mark thoughts of how to fix them.
It is very power/space inefficient, it requires an absolute ton of space to function, between the heat exchangers, the cooling rod pools, and the RMBK/RMBK functional piping.
Thoughts on how to fix:
-A special, compact heat exchanger tied specifically to the RMBK, that is more efficient, but actually needs to be linked to an RMBK to actually function, potentially make it a factor of gasses and/or power for efficiency levels.
-Making temperature transfer a factor of the rod depletion (more depleted means it gets hotter), while reducing the overall cooling requirements, to a level that does not require a gigantic series of coils unless the rods start to get highly depleted.
-For general gameplay;
The RMBK is incredibly vulnerable to tampering or attack. It could be said that it is more stable than the Stormdrive. This is true during non-combat operations. During any sort of combat, it absolutely needs to be babysat to have even a fraction of a chance to shut it down in time to save the ship if the huge section of engineering it occupies takes a hit, and it is reasonably likely that such will not be possible anyway. It has the nickname “Chernobl” for a reason: if something goes wrong, it goes very wrong, very fast, and spews radiation everywhere.
Thoughts on how to fix.
-Condense all the control consoles into one console like it is with the stormdrive. It is much easier to rebuild one essential control/monitoring console than it is to rebuild 3.
-Increase the level of time that you have to react to a critical failure condition by making the thing more resilient at its critical levels.
-Fix the previously mentioned issue with the level of space that the coils occupy. The sheer size of the thing ensures that it is reasonably likely to get hit in battle. Pretty much any hit to the RMBK in its current state will ensure it goes critical.
Hope this was at least semi-useful.
End of wall of text.