My organisation has lots of distinct groups that are independently funded, so in Desktop Central I set the 'owner email ID' inventory field to be the email address of the group leader. This allows me to know who is 'responsible' for the machine, as well as setting up a scheduled report that emails every group leader with an asset report - which is excellent.
However I was thinking that what would be amazing would be a 'user email' field, that defaults to the active directory email address but can also be set manually. This would make it much easier to contact the relevant person when there's a computer issue (e.g. drive full, restart needed etc) and would potentially allow for some very cool advanced features (e.g. automatically sending emails to people when their computers had been on for too long, etc)
No idea if it's possible but I thought it'd be worth suggesting :)