I did see some old 70s or 80s interview with Stan and Roy, and Stan was talking about how Roy was the young blood.
He had a cameo in Netflix's Daredevil, nice to see they are branching out the Stan Lee cameo tradition to other creators. Jim Starlin was in Avengers Endgame, as well. We got Mr. Ditkovich in Raimi's Spider-Man, too bad we didn't get a Ditko cameo.
I missed Roy's Marvel years, I know it's heresy. He had a big run on Conan and was basically credited with creating Red Sonja, right?
I'm more familiar with his All-Star Squadron/Infinity Inc stuff. Sometimes it seemed he was more interested in keeping all the Earth-2 continuity indexed and updated than just telling a story. But I enjoyed it.
I do like those movie cameos that go beyond Stan Lee, too. Thomas certainly deserves the recognition.
I'm no Robert E. Howard expert, but I believe he created Red Sonja, although Thomas developed the Marvel character that she became.
When my wife was pregnant with my son, I started reading Marvel from FF 1. Now he's 13 and I'm in the middle of 1997. However, for some reason, I decided not to read Sgt Fury and Conan. I've got to go back and read them some time.
I never read Thomas' DC work but I know he was a big fan of Golden Age comics. I used to think of him as fandom's most successful writer (Stan kind of promoted him as that in letters pages) but I think he is more than that. A fan, to be sure, but also a great comic book writer. Criticisms of him are justified but he was the perfect guy for that time and place to keep the Marvel Age going.