Charms bar? Continuum? Names used to be fairly intuitive, and even when they weren't completely intuitive their names were derived from their technical function. I'm thinking "context menu", "start menu", "task list", "quick-launch menu", and "system tray". Now they're just marketing doublespeak.
Pick a UI and stick to it! I'm getting very tired of having to relearn the entire UI whenever you make a new release.