I support Monolith's idea of incorporating a scripting language designed for incorporation, such as Python, TCL, or Lua. This would be much easier than inventing (and parsing\interpreting\etc.) our own. However, it's still a good idea to brainstorm function and object ideas like Odin, Bloodrabbit, and sers have been doing.

Realize, though, that we don't have direct access to anything. All properties and actions would have to occur through memory hacking. There is currently no known way of spawning players or objects.