You just listed a bunch of titles I've never heard of before -- that's awesome. I loves me some planetary romance, and I will definitely check it out.
As for Moorcock, I can recognize his work as quality and influential, just not my kind of quality.
No sweat on a disagree, all a matter of taste after all, but Piper's Cosmic Computer is on my perennial re-read shelf. I adore that book and would LOVE to see it in Planet Stories.
And I hear you on Howard. I tried. I really tried. Elephant was one of the best S&S short stories I've ever read, but I just couldn't do it. I had to put the anthology down. I'm going to disagree and argue that Howard was racist and, further, that his work is racist. Not a popular stance, I get that, because the stories are so darn good. Sodarngood. Nonetheless, that's what I think.
Let's hear it for the Worm! What about it, Erik, Eddings The Worm Orobus in Planet Stories?