etc, lib, tmp, usr, var and Disk Usage

[belvin]

I've just installed Plesk Reloaded 7.5.2 from 7.0.2.
I noticed that with each physical hosting domain I create, PLESK now add the following new directories:
etc, lib, tmp, usr, var

Q. Understanding that I will never give ssh access to any of my clients, can I delete these folders?
Q. If so, can I configure PLESK not to create them at all?


In PLESK 7.5.2, when I create a domain with physical hosting, now Disk usage show 10Mo for an empty site.
I cannot use my 3Mo domain template anymore.

Q. Are these extra directories really showing up in the count of Disk usage?
Q. Is there a way to avoid it?

Thanks

Belvin