I've got a few suggestions that I hope you will consider for your next release of the Scholar Theme. They might even be relevant for your other themes as well:
1) Different landing pages for members and non-members - as per your Edublogs theme. Most sites have different messages for members than for non-members (not signed-in members).
2) Make the password requirements explicit on the registration page. ( simple theme change )
Every time I upgrade I have to manually change the text to make it plain that the password has to be 7 characters long etc. Many potential new members were lost because they gave up at the registration stage - not even the error message made the 7 character requirement plain.
3) Increase the size of the edit box when posting on forums. Currently only 2-3 lines are visible - 20 lines is much more usable