Being a huge Riftwar fan I read and enjoyed Curse, and Merior and Vastmark but really..

The climaxes were repeatative.
Anything that can go, will go wrong.
Arithon is so emo Gregor Clegane should give him a sound beating.
The eternal hopelessness and foreknowledge this will go on for 500 years ( Davian's fountain ) it's just too depressing.
The language is horrible, unfit for people who don't have an English major.

Somethings were pretty cool, though. You can tell Janny Wurts really loves Athera. The Spliter worlds concept, the Fellowship of Seven, the Koriani, the enmity between the tribesmen and townfolk. Almost anything to do with setting is pitch perfect.

OTOH almost all the characters pretty much suck. I remember slogging through Fugitive Prince thinking, "Oh man, another Dakar chapter. Can't he die already" Lysaer is an ass, but it's excusable because of the geas. This does not stop his condition from being repeatative, though.
Arithon and his pseudo-romance with that witch... Elaira maybe ? Never goes anywhere.

I used to love this series but frankly, it's a chore. And I also recall her whining about RJ's 'endless parade of sequels'.