Yeah, sadly there are no modding tools and users have had a difficult-to-impossible time creating any new content themselves.
I remember there being [url=http://xanlosch.de/kiyas_crypt/versuch.html#ddie ]an item editor and a character editor[/url]. Keep in mind these were made pre-GOG but I still use them from time to time with no issues.
One user also made a font enlargement patch for high resolutions for both
Divine Divinity and
Beyond Divinity.
Another user was working on a difficulty mod but it was tedious because he had to add each new enemy with hex editing and he eventually gave up because of lack of interest from the community.
