I tinkered around with it and I like it. Here are a few thoughts I'd like to see:

Ability to read macros that already exist and to edit them.
More Icons (already in the to do)
Automatically clear the macro name and macro boxes when successfully adding a macro and add them to the list of existing macros.
Be able to specify which macros are character specific and which are set to account wide


Great start so far :_D