Apple's Aperture is an amazing program, but it doesn't do a couple things in the way that I want them to be done. Luckily, there are workarounds via Applescript.
 
Here's what I have so far:
 
  1.  Add Extra Metadata ("Maker Notes") to Photos Already in an Aperture Library
  2.  Import Images to Aperture and add Extra Metadata ("Maker Notes" and IPTC Location data based on GPS EXIF tags)
Aperture Tidbits
Useful Aperture Links;
  1.  Apple's Aperture Discussion Forum
  2.  Speed Up Aperture By Rebuilding The Database Index