Updated UI designed to get up and running on a new DPS or tank class/spec without needing to get too many weakauras. Bar 1 is the biggest bar in the middle, so you can just bind your common keybinds there and get used to your main rotational abilities by having them right by your character, also helps with vehicle abilities.
There is a bar under your player unitframe for miscellaneous cooldowns you want to track (maybe potions or utility spells).
There are 3 hidden bars at the bottom if you want to bind extra stuff there. I would suggest binding anything spammable there, especially things that have no resource cost of procs associated.