I'd love to see images, set like a node type, folders/computers for the Asset Management Seminar etc.

Drag and Drop is always great. Moving things like assets to locations is always a good one, then update its relationship.

I would like to see more TreeViews. E.g. when more tabels are in use not just one as in your D20.

@Jan do you have an example of data youd want to show?

You could just use a UNION query to join the tables together, make sure they have the same field count and alias them.

I am not sure. I see TreeView as a very good way to get an overview. E.g. Each employee may have contacts, so below an emplyee, there could be a list of contacts (customers or what ever...). The problem I see is that a emplyees could have the same contact sometimes.
I really don't know a good exampel I am just trying to see if I could make use of the treeView in some nice way.

Agree with Alex, Drag and Drop moving things around on a tree view and then updating back end data would be a good thing to see

OK, I'll add it to the list.

Tree Views this is new to me, would like to see more especially around the Genealogy database, I hope the second part o  f genealogy is coming soon. Good stuff.........................