Yes I talked about this with David a while ago. The new GUI Simon is working on should hopefully address all issues such as these & more.
The current GUI is not very dynamic at all, so for instance if you are using a laptop with a resolution of 1280x800 or 1366x768 etc then you might not be able to see all of the editor without dragging the different form sections around & in some places like the 3D character options, half the parameters are hidden because they go down past the available screen space. Luckily I have a 1080p monitor.
In regards to not being able to scroll when zoomed in... you can drag the viewport around by holding down the middle mouse button & dragging the mouse around. Currently there's no keyboard shortcut for enabling the hand tool other than middle mouse button.