u could not be any righter than u have been by saying that.
btw, getting back to our miniwins, here is a list of subfolders that u can safely get rid of, besides all we have gotten rid of already:
\programdata\Dbz33C09
\programdata\Dbz717CC
\programdata\ProductData.BackupByPortableAppC
\windows\BrowserCore
\windows\CbsTemp
\windows\CSC
\windows\IdentityCRL
\windows\L2Schemas
\windows\LastGood.Tmp
\windows\Migration
\windows\Pbr
\windows\PLA
\windows\schemas
\windows\SecureBootUpdates
\windows\security
\windows\SKB
\windows\System
\windows\addins
\windows\bcastdvr
\windows\System32\Hydrogen
\windows\System32\ias
\windows\System32\icsxml
\windows\System32\inetsrv
\windows\System32\Ipmi
\windows\System32\Licenses
\windows\System32\MSDRM
\windows\System32\MUI
\windows\System32\NDF
\windows\System32\networklist
\windows\System32\PerceptionSimulation
\windows\System32\ProximityToast
\windows\System32\ras
\windows\System32\RasToast
\windows\System32\Sgrm
\windows\System32\SystemResetPlatform
\windows\System32\wbem
\windows\System32\WCN
\windows\System32\0409
\windows\System32\AdvancedInstallers
\windows\System32\AppLocker
\windows\System32\appraiser
\windows\System32\AppV
\windows\System32\Bthprops
\windows\System32\ContainerSettingsProviders
\windows\System32\DAX2
\windows\System32\DAX3
\windows\System32\DDFs
\windows\System32\downlevel
\windows\System32\DriverState
\windows\System32\dsc
\windows\System32\FxsTmp
\windows\System32\GroupPolicy
\windows\System32\GroupPolicyUsers
and all \windows\syswow64 subfolders except downlevel and the language folder ??-?? (en-US or the like).
I have been running my miniwin for a couple of days and I have not seen any different behavior from when the above was there.
In any case, I recommend finishing off the customization of your OS before deleting the above subfolders.
save ur past vhd os someplace and then try it and see it for yourself.