
Quick suggestioons from me: Must haves: Effects UI, lorehound ,boosprint, Autorepair, LAIRTRACKER.
Install location for most plugins in steam version of game is: C:\Program Files (x86)\Steam\steamapps\common\Secret World Legends\Data\Gui\Custom\Flash
Files are usually zipped when downloading. Folders need to be unpacked and placed in folder. My Flash folder looks like this: