I have 50 Macintosh SEs on an AppleShare network. The SEs shipped with
System 6.0.5 software. As far as I can tell, this version of the system
software does nothing for the SEs and only consumes more memory than
System 6.0.2. Could I install 6.0.2 on them instead?
You are basically correct; there is little advantage for those machines to
run System 6.0.5. If you wish to use 6.0.2, go ahead.