Here are the three Addons that make quality of life soooooo much better that it is hard to imagine playing without them!
Lorehound is great little tool that alerts you when there is nearby Lore!
meehrPack is a bundle of extremely useful addons such as auto sprint, map coords, top bar and much more!
3) Don't Make Me Wait
Don't Make Me Wait eliminates the Five seconds that you are frozen after making a teleport!
There are many other GREAT addons out there but these are the ones that I can not play without!