Well first off it's Temple of Doom that sucks, not Crusade.
Comicbook wise I simply don't get the love affair with Barry Windsor-Smith. When I read Conan the Barbarian, all I ever think is, "When does Buscema come on board? Enough with these hair-hats he has everybody wearing."
I'd say Don McGregor as well but I don't think he quite fits the bill as unlike Smith he is not universally loved; he has some (wise) detractors.
I can tell you that you will never convince me that "Last Crusade" is not a steaming pile of sh%te. I consider it an embarrassment to cinema.:-)
"Temple" at least tried to be different rather than the horrid retred of Raiders that Crusade tried to be. Nazis, Biblical artifact, Salah, there was not even an attempt to do anything new. As a comedy it's fine, but Indiana Jones was always an adventure character first.
Im kinda with you on Barry Winsor-Smith. He seemed to get more aclaim than he merited, especially in early Conans.