Is there any serious graphical user interface research for Ubuntu? I mean, are there any improvements planned by Ubuntu in order to improve it's default user interface? Just for example I don't understand why are there two upper bars on every window, menu and controls like close, minimize, maximize, when the title is not very useful.
See the work of the Ayatana project, https://wiki.ubuntu.com/Ayatana
Every person may have a personal view on how the UI should look like. It is important to be receptive to change and open-minded.