I have a really decent computer, which these probably don't matter, but are worth mentioning (8 gigs ram, enough graphics to run SC2 smoothly on High), yet the Galaxy Editor seems to run like it's in a potato sack. Why does it take fifteen minutes to open a map (The map was practice terrain/doodad/unit placement I did from a tutorial, extremely small), or in that matter, start the dialog to make a new one? Never knew dependencies were that big. Is there anything I can do to reduce the wait time?

(In order to meet the quality of the rules in case that is deemed inappropriate^)

My galaxy editor starts and loads extremely slow. A few months ago before I dropped what I was doing because of school it ran perfectly fine and loaded things within seconds. Did a patch add a bunch of extra crap that's bogging it down? Is something up with my system? Throw me a bone here if you will, for I am lost, and slightly irritated because I want to get back into learning how to map.

It shouldn't take that long to load, my sister's dell laptop which is technically below the minimum requirements for sc2 can load the editor in about a minute.

Look around for any temporary files and delete them (make a backup of them before doing so in case they aren't actually temporary files. Have a look inside the editor's preferences to see if any settings could be causing problems. Make sure you're running as administrator.

Maybe try sc2's repair tool, too.
And try resetting the editor's settings, too or maybe delete editorvariables.txt in your "documents/Starcraft II" folder.