LBGUI is good but not complete.
I support the request.
And some more feature-request's:
- We should able to clip panels, so we can do scrollable lists easier. Untill now I didn't find a good looking workaround.
- The Truetype rendering has to be imporoved. I think regardless which true-type font you choose it looks awfull.
- You should add an offset_x for text's, so you can scroll them horizontal. Until now you have to use complex stringoperations to show a cutout of a text. Editboxes with complete functionality would be possible with this.

- AANd please add an slider-changed event. I hate to have a whileloop for cheking a variable change.