Suggestion for you.
Allow admin option to disable the usercp options for registered users.
Today when in my own userCP I accidently clicked one of the options today think it was blogs and then saved the userCP page. Now I didn't realise that I had clicked the option but when I clicked the Whats New button nothing came up.
Being incredibly intelligent I obviously figured out what was wrong within 10 seconds but others might not.
Anyway.
Xx