I must confess i no longer can be bothered to read feist, i mean the author himself seems to blatantly not care anymore, and is apparantly only interested in further milking the cash cow.
Even so, i am a bit curious about the Taredhel. For instance what happens to them? How badly do they fail in conquering Midkemia, do they go all goody-twoshoes and work together with the other races? Someone said they have a strange relationship with the Moredhel. What does that mean?
Neither, actually. Feist introduced them as this great big new plot thread and looming threat, and then forgotten all about them. They're building their city, cautiously establishing relations with Elvandar, keeping humans out (it's implied that they kill humans who stumble across them by accident and without invitation), and that's that. They do nothing in A Kingdom Besieged - they have maybe three scenes, and that's just Gulamendis and the Lord Regent.
Apparently, writing about a brand new, completely unrelated conflict between the Kingdom and Kesh is supposedly more important and interesting than pursuing an already established important plot thread.
I, too, feel that Feist doesn't seem to care anymore. His character-building and plotting work in the last few books have been atrociously sloppy and lazy.
The taredhel have a strange relationship with the moredhel in that they seem very similar in attitude (conquerors, war-like, militant, look down on other races) but treat the moredhel as a taboo subject, referring to them only as the Forsaken ones. It isn't explained why they hold this status (of course, why would Feist write about anything interesting?), but one would assume that it's because the moredhel are still the only known edhel who consciously and deliberately emulate the Valeru and seek out their artifacts. To the taredhel, who initially fled Midkemia just to escape the Valheru and their influence, that would certainly be a big deal.
