Re: How did the cast feel when Worf was made a regular?
I've never read any complaints, though I suspect some of them were worried about their screen time. At least nobody got fired for it, unlike TNG and VOY.
Moe: I'll take the blonde!
Larry: I'll take the brunette!
Curly: I'll take the Black and Tan!
--Wee Wee Monsieur (1938)