I've found a couple "issues" or quirks with the guild configure screen that could probably be fixed pretty easily:
The color preview line is too small and impersonal. instead of "Color", display the name of the guild in the chosen color
When you enter a rank with invalid characters (or use a tag/name already in use) and press Ok, it closes the window as it displays the error message, erasing all the work the user has put into configuring the guild, requiring it to be done again. The window shouldn't close until the form passes without errors
I've found a couple "issues" or quirks with the guild configure screen that could probably be fixed pretty easily: