Righty, lets see @Captain

#1: Terrain is acceptable (We are using magic after all) however the primary terrain designated by the map is not removable without permission from me (For example. a mountain range can not be retconned, however you can say that there are special hot springs or such on the mountains)

#2: Fae-style elves are fine, actually I support this idea.

#3: Magical elements are acceptable so long as they are approved by me. Seeing as you already specified as to why they couldn't be used as a powergaming tool...

[img=http://lametthesource.files.wordpress.com/2012/07/stamp-of-approval-612.jpg]