We've just rolled out a new template designer and would love to hear your feedback. You'll find it right next to the existing designer so make sure you give it a try. We'll be phasing out the existing designer in a few weeks.
Some of the new features -
WYSIWYG! More accurate representation of live content
Editing is now available in preview mode
Larger design surface
Integrated RevelScript editor
Support for any resolution, orientation, and multiple displays