How about a text/html/TEX frame for Text/Notes in version 5?
While frames are being added for Python and 3D, a very valuable addition would be a frame that allowed easy creation or imbedding of more textually based materials - with browser like capabilities. One thing this might do is allow someone to use SAGE while at the same time using GGB5. Also this would make it easier to attach instructions to a figure without having to place the text on the figure.
This would continue the convergence of technologies with GeoGebra as a central free open source tool for doing mathematics with technology.
Professor of Mathematics
Humboldt State University