Username or EmailPassword
Open office UI is a clone of MS Office in 90% of use
People like what is familiar...
How do you want the UI to behave differently? You said NOT like MS office 2007?
Its often easy to say 'I want the the UI to be improved' but how SPECIFICALLY do you want it changed? Have you submitted this request to OOo? If you dont tell them, you cant expect them to make the change :-)