Also remember that the BF has a habit of releasing new features with nothing but developers notes explaining the feature. The 3d texture painting mode is a perfect example of that. A technical writer writing a freely downloadable pdf (with a book that could be purchased to cover costs) would solve that problem.
The new UI is a massive step forward from a former in-house tool but without solid documentation anyone just starting out in 3d will have just as much trouble as with 2.4x.
@ Michael - file a feature request