I think the trope isn't all that common, or at least it takes some research to find it out if it's used. Wicks can be improved by crosswicking.
I doubt a different name will help making it more popular. It's in the Characters and Casting index, and the name contains the other two relevant key words. A name that's wider than the trope seems like it would cause more misused for thinking it's wider than it is, but not a lack of wicks.
So, I'd say prove the name is misused with a wick check or lay the motion to rename it down.
The Internet misuses, abuses, and overuses everything.Fair points, particularly that this is a concept that actually neccessitates research to confirm. But I also wonder if this shouldn't become noted as trivia since it lacks the crowner, but that's where some of the wicks have settled.
Clock's ticking.
Locking up.
Waiting on a TRS slot? Finishing off one of these cleaning efforts will usually open one up.
I really wouldn't have guessed this was explicitly a casting trope, (picking an actor that doesn't fit established physical description during casting) as its very generic sounding, though the description looks decent enough. Some three dozen examples and 25 wicks, with visible ambivalence as to whether it belongs in trivia or on main. Shouldn't this be a more common trope, trivia or not? Unfortunately the only name I can think of that would convey what this is about is a snowclone: Casting Against Call