Individual Time Zones for Users

This is a MUST have for any organisation that has individuals sending out Marketo emails from different time zones.  Its pain enough if someone from the east coast has to always adhere to their corprorate PST timezone, but it is too much to ask for Global regions in EMEA, APAC, US, and ANZ to all adhere to just one time zone system wide.  We need to have them be able to select time zone by user.