often you will find entries for the more popular actors people as 'STARRING' in something when it's actually a clip from something else or as IMDB would put it HIMSELF/HERSELF ARCHIVE FOOTAGE
It's something extremely rare. I think it's overkill to change the interface for something so uncommon.
Something much more common is actors invited to news shows or ceremony shows, and in the end those shows appear in their filmography. What I do in that case is I trim the cast of the show to keep only the hosts. If you notice a show like that which I forgot to trim, please tell me.
is there a way to apply more filters (tick boxes) to the PERSON display, in may case i often want to flip on an off MOVIES/SERIES at this level.
The series have a big "series" written in red. In my opinion, that catches the eye quite enough, no need to add a filter that would make the interface cumbersome.