I'd like to have a way to practice reading new characters/words I have learned. Even after learning how to write a character, sometimes I still can't recognize it very quickly while reading (probably because of too much 死記硬背). It would be cool if there was a reading practice mode that prompted you for pinyin and tones, allowing the student to attack character learning from both directions.
On an unrelated topic, Skritter is a million times better with a tablet compared to a mouse or trackpad. I just got the cheapest Wacom tablet I could find, and not only can I practice much faster, but I'm more confident that I am reinforcing my actual handwriting muscle-memory rather than useless mousing memory.