#1 - I've got this in our defect tracking system, affecting IE. Good point about the vertical scrollbar.
#2 - This is by design, so let's call it a feature (since you can nest deeply). Also, as a user, you can rename the top level group.
#3 - This was a known issue with v1.0 RTM, we have a service release in June which should resolve this.
Here is another one:
I imported my IPAM DB from the Engineeers Toolset.
All the subnets are in a single flat hierarchy.
I'm now dragging and dropping the subnets into groups.
Some groups have several dozen subnets in them, so I run out of screen height to drag the subnet into the group above.
The issue is when I drag a subnet into a minimized group, the group automatically expands and moves the next subnet I want to drag, off the screen.
I then have to re-minimize the group to get to the next subnet I want to drag.
Either the screen must be made to scroll automatically when dragging to a group above the window.
Or allow me to select and drag multiple subnets into a single group all at one time (preferred).
Or allow drag and drop between the right and left panes. (Also a good solution).