I was clicking through the terrain of Powdertoyia, and it struck me that there are some saves with multiple signs in them that are quite annoying. My suggestion is simple: The following options should be added to the sign tool:

• Delete all signs [for those annoying saves where there are signs in front of EVERYTHING]
• Delete all layered signs [signs with duplicate content placed on top of each other caused by a bug in previous versions]
• Hyperlink sign

In addition to this, one should be able to type a long string into a sign box and have it auto-create a new sign perfectly positioned to extent a sentence.

Also:

Upside-down and horizontal signs, as well as the ability to make a sign's callout come from the top of the box.