You can submit the changes to me here, or on github, and I'll add them. But, to make the changes yourself, you'll have to make sure that ISXEQ2 is UNLOADED before making the edits. (It's honestly best to make the edits when EverQuest 2 isn't running at all.) Then, the changes should not overwrite until the file is updated by the official patcher (which is not very often.)