There is so much to do in WoW, you just have to be selective about what you do every day, and it is easy to forget those things that you might do if you have time left. This plugin will let you group tasks (kill a mob, do a raid or heroic, do some dailies, do the weeklies) into manageable chunks. You will only see those tasks you define yourself as interesting, and if they are possible to do right now on this character.
This is still very early experimantal stage, not even a working addon. The first part will be to manage repeatable quests. (well, the addon worked until I decided to switch to the ACE3 framework and rewrite it, it just didn't do anything useful)
This plugin will not be a guide on how to do the quests or kill the bosses, once you consider using this addon you have most likely gotten bored with the grinding allready.