This block along with the quick find block are really useful to our users.
Upon discussion with a colleague I thought I would float a couple of things that we think would make the blocks even better:
1) A merged version of the Quick course & Quick user search block - this would take up less real estate on the screen
2) When returning results to include a small thumbnail of the user next to their name

I'm not a php coder so am not sure how feasible or practical these enhancements would be to implement.

Regards
Mark