Wow, I just discovered this forum recently, and here you are discussing another of my favorite authors/books.
I always felt McKillip and SRD had some similarities in their writing - the distinctive way they pick their words (though SRD seems to fling them about more violently), the emphasis on the story/character rather than world-building (the worlds were always vivid, but to me felt 'flat' outside of the story), and the Evil Bastards I end up loving anyway.
I found it easier to take in the Riddlemaster trilogy, since the Evil Bastard wasn't the viewpoint character! The flat world annoyed me, but as I reread the books so many times, I ended up making up a lot of "worldbuilder" stuff to fill in the blanks. (I have even had dreams where I found a "lost" 4th volume. Ha.)
Similarities/parallels between Riddlemaster and the Chronicles of TC:
Morgon: I'm so not interested. No, no, why does everyone insist I have power and must save the world? "I'm not out hunting a destiny like a strayed cow."
Covenant: You're not even real! Hellfire!
Morgon: wah, wah, Deth ur teh Evil1!!!
Covenant: wah, wah, woe is me, this totally sux
Wizards and landrulers - a bit like the Lords - perfectly decent folks out of their depth
Earthmasters - the elohim reminded me of these
The weird map boundaries. What is out there beyond those borders? It never feels real. With all those superpowered folk, you'd think there'd be more contact. Even in the real world, humans with primitive tech have managed amazing trade routes.
The 1000s of years that don't feel all that long. What, this old king is centuries old, and only now has grandkids that are still *children*? The language doesn't even change in all that time. (I have to posit magic translator dust or something). The populations are remarkably stable (increase from last disaster, then stay put. Magic contraceptive dust?)
The powerful immortals with their fertility problems.
Spoilers for the Runes of Earth and the Riddlemaster Trilogy:
ONE generation and that's it? The Earthmasters manage it once, and after that it's just a few half-breeds. You'd think there'd be more. The elohim never even manage one generation, it seems, but then you have Kastenessan's kids...but after that, just poor Esmer? You'd think those lusty Haruchai would have spawned a few more than that. (though maybe they did, and will be revealed later) And no great-great-great-great grandkids?
Ok, ok, actually I do like the books, or I wouldn't babble so.
Other McKillip books I love (some just leave me cold): The Changeling Sea,
The Sorceress and the Firebird (wonderful dragons), A Song for the Basilisk
Isern
P.S. And I can't even pronounce "Raederle". In my head it has 4 syllables, and I KNOW that's just wrong.