Direction starring (cast)

Right now cast is sorted by number of appearances in the series. Are you asking for this to change to the order in an opening credits sequence instead? I'm not sure that's possible, from either a technical standpoint or a reality one, I can think of several series' where the opening credits sequence changed the order of how the actors are credited.

Presumably you'd go by the most recent listing, and let the rest get listed below. Although there'd need to be a policy for that, or people would probably change the ordering until they hit the edit limit. Whether that's better than the system taking ordering out of the equation... *shrug*

There'd be some small advantage to it. Go to American Horror Story, and the first six characters you see are from... Season 4, Season 1, Season 5, Season 1 (is that a photo of Dylan McDermott from Season 1, or Season 2?), Season 2, and Season 4. But AHS is a pretty weird show to list, credit-wise, regardless. They all appeared in 12 episodes each. So the prioritization is correct, but display-wise, it's kind of confusing.

Indeed, as soon as cast appearances are created the actors will be sorted by their number of appearances. (Which I think is much preferred over manually setting an order, because of the complications noted above)

I think at least the Special Guest Stars should be listed at the top of the list of guest cast under the "Main" tab of the episode page. They are under the "Guest Cast" tab, so why not the "Main" one?