The idea is to remove all the unnecessary tables you can find in ACPI and SMBIOS that are unneeded for darwin.
We can use darwin dumper on real mac to make a white list of table and kick the others (SLIC, OEMB...) from RSDT.
The same idea can apply to SMBIOS I think.
For paranoiacs, we can also write zeros on the headers of unreferenced tables to foil a deep memory scan.