I know that a custom GlyphData.xml works when in the same folder as the sources OR in a parent folder OR in an “info” folder. But it might be useful in some cases to put it somewhere else or in a folder that is named differently. If you would consider a way to make the location more customisable it would be awesome.
(Personally I would just need to put it in a “_info” folder instead of “info” in order to respect the folder structure of the company I work for).