Well. LFG is designed to replace blizzard's premade groups entirely just like custom raid frame addons (like grid, grid2, healbot) did towards blizzard's compact raid addon. We can actually do little customization towards Blizzard's UI unless we write our own "UI". Instead, just use LFG to create/search groups instead of blizzard's UI since it sucks.
When you installed Zygor Guides Free Trial, quite a number of entry & files were created in the Windows Registry (What is Windows Registry) and hard drive, while running the default uninstaller always failed to remove all these data, it leaves us to manually track down and delete the leftovers inside the computer. This is an optional step, you can skip it and call it a day, but if you keep ignoring this every time you uninstall a program, your computer registry may become overloaded as such useless data accumulating, thus lead to system slowing down. Though it is optional, it is still recommended to do it as a good practice of using your computer.
It showed what items were on the rise, which ones were stagnant, and which ones were going down. I don't know how accurate it is since I am not familiar with my realms AH yet. I put some things on the AH with the Zygor suggested price and sold about 5k worth of stuff (I had a ton of MoP gems/herbs sitting around). I did use TSM suggestions as well and for the most part they seemed pretty close. But I did do an AH scan with Zygor before posting.
Anyway I will go ahead & download the Twitch app like everyone's saying, but I still need to know whether my in-game addon settings will carry over automatically, or whether they'd return to default same as if they'd all been uninstalled in the curse client then reinstalled from scratch. Because if it's the latter then I will have to take screenshots of the settings on all my toons BEFORE I install the addons thru the Twitch client.