WinRE is not a full execution environment, so it doesn't need Windows updates and doesn't support all the normal Features or Apps.
It's basically another version of WinPE to boot from in case you mess up the system partition. When Windows gets installed, if there is a Recovery partition then reagentc extracts winre.wim from the live system's filesystem, and installs it with a copy of the current drivers.
There is no real point or benefit from checking WinRE while applying changes across other editions. Any changes you make to winre.wim will be lost if a future monthly CU includes an updated winre.wim. The replacement winre.wim is a standalone image, so it will be missing any changes you applied to it in NTLite.
Save yourself the extra time, and leave WinRE alone.