It would be great if they provided a visual, drag and drop tool to allow us to create more advanced templates. Basic templates are easy but needed our web developer to help with HTML - it was not difficult but would be nice to be able to do it ourselves.
We were very small when we started and have grown considerably with the product. You may want to check if you are 500+ users with an extremely large price book. They have easily accommodated us but not sure of larger requirements.