I confirm this experience: I have not used the HUD for months now. Which indicates that it does not add to Ubuntu's usability any more.
Neither does it provide unique functionality (it merely is another way of accessing the application menu -- and that's against Ubuntu's design philosophy of providing only one way to accomplish things). Nor is it especially convenient, otherwise people would use it.
I confirm this experience: I have not used the HUD for months now. Which indicates that it does not add to Ubuntu's usability any more.
Neither does it provide unique functionality (it merely is another way of accessing the application menu -- and that's against Ubuntu's design philosophy of providing only one way to accomplish things). Nor is it especially convenient, otherwise people would use it.