thank you for making, supporting and improving your Software (although one who seeks the Ideal will never have peace

In late '95 I liked to use so-called 'FanRAM' (a TSR) in our 486dx-computer class and made the teacher cry typing "format c:", deleting ALL dirs etc; and see her shinning when after Ctrl-Alt-Del (NOT before!) everything was OK. Cool.
But now I see a bit more serious purpose for such a tool:
why don't you make a Virtual Account? E.g. when loging-in it would work normaly, but after loging-off everything (if not saved explicitly) would return to a 'saved snapshot' or required confirmation of all 'changed' items or something automatically?
Yep, VMware/VPC etc do provide kind-of-'alike', but require a-n-o-t-h-e-r- /gues/ system to be installed and garbage-software used, and as for me I would like to have such a feature in the R-E-A-L working system. So? Is it quite possible?
Anyway, wish you good luch and keep good work' Cheers.