I looked at ResCompare of the Disk Tools 2 System and compared it with a "Minimal Install for this Macintosh" and it's quite different...

The Installer says the Minimal Install will take about 1MB, but the System file alone from that dump is 2.5MB. Ludicrous...

I also looked at the Finder, there appears to be a lot of differences. I don't think the Finder is the culprit, but it would help. I can't see if ResCompare uses color for referencing, because I am limited by 16 greys.