Just a quick thought I had, before I dash off to work:
The textures for the Reactor Coolant Injector block in both RSH and LZH versions are identical, so there's no way to tell which one you have by sight alone. It'd be nice to have a thin stripe or border or something that's colored red or blue as appropriate, to make differentiating the two easier.
I love that SUCs are a thing again, though.