I know that this is an old thread but since I had the very same issue and since this was the first entry on google I'd like to share my solution for now.
If you have already set up a global profile and would like it to load per default on new characters you can simply change line 305 in the SexyMap.lua from:
Code:
SexyMap2DB[char] = {}
to:
Code:
SexyMap2DB[char] = "global"
Note that this will be overwritten with any update of the Addon but I find it much easier then running a macro every time I create or log into a new toon.