For better system anonymity (to decouple VM OS timestamps leaked in
traffic from host ones) a feature can be added to the clock offset
variable to select randomly from a specified range of seconds from
instead of a fixed number of seconds. That way a guest's clock can vary
unpredictably from the host's and confuse correlation by network
adversaries.
Full Disclosure: I am from the Tor centric Whonix Project -
whonix.org
and this would be a very useful feature for us.