Look at this PIE! (Paranoid Android 2.99 Beta)
This is a video showing the pie feature in the newest beta for the paranoid android rom (Right now some of the features shown in the video are not released because it is still a little buggy). It is designed as a 4th UI option for the rom. The others being phone, phablet, and tablet. It replaces both the status bar and the nav bar. I personally think it looks totally amazing!
Just a note. I am not affiliated with the Paranoid Android team and had nothing to do with creating it. I am just a very satisfied user of this wonderful rom.