akadmon wrote: I hesitate to shell out $50 for Fusion 5 just to get this functionalty.
DO NOT under any circumstances whatsoever purchase any release of VMware Fusion (or Parallels for that matter) without first testing the release with the free trial serial number to make sure it is not problematic on your system and meets your needs/wants! 
Also if upgrading make sure you make a proper* backup of your Virtual Machines before upgrading so as to be able to restore to a known good working Virtual Machine if necessary and you decide not to purchase and need to reinstall the previous version.
* It is a known fact that Time Machine is not 100% reliable backing up/restoring Virtual Machines under all circumstances/conditions. Also backing up Virtual Machines via Time Machine is disk/time intensive and wastes a tremendous amount of space for something that may be corrupt and worthless come time to restore it. At a minimum I would exclude Virtual Machines from Time Machine and with the Virtual Machines shutdown, not suspended, and VMware Fusion closed then manually copy the Virtual Machines Package(s) to an alternate location, preferably on to a different physical hard disk. Then keep the User Data that is stored within the Virtual Machine backed up off of the Virtual Machine on a regular basis so as to always have a current User Data Backup. If you have to restore a properly backed up Virtual Machine that is not as current at least you'll have a working Virtual Machine and current User Data to go forward with when you find out your Time Machine Backup of the Virtual Machine fails.