The Panopticon/Ambiguous Companions!
unsure if there has already been a discussion about this before or not, but i think there is a big problem on this Wikia when it comes to who is considered a companion and who isnt. this issue is massive and we would probably have to take it Doctor by Doctor. i will start with the Tenth to showcase my issues.
Television
first of all we have the "multi-story" section, which i agree with. Rose, Mickey, Donna and Martha were all on-screen companions of the Doctor over the course of multiple stories. But, technically so were Jack and Sarah Jane - yet, they are in the "multi-adventure" section which seems to be intended to house characters like Kazran Sardick (before he appeared in audios), Abigail Pettigrew, Nefertiti and John Riddell, who all went on multiple adventures with the Doctor but only appeared in one episode.
to conclude this part, Sarah and Jack should be in the "multi-story" section as they travelled with the Doctor in different episodes / stories rather than having multiple adventures in the same episode / story. theres also the fact that they had adventures with the Tenth Doctor in other medium - and Kazran's adventures with Eleven in audio led to him being upgraded from "multi-adventure" to "multi-story". also, for these reasons, Jackie should be in "multi-story" too (rather than "narratively ambiguous" as she also travelled with the Tenth Doctor in different episodes / stories.
next is the "single-adventure" section. i agree with all of the entries here - K9 MKIII, Astrid Peth, Christina de Souza, Cassie Rice, Jimmy Stalkingwolf and Wilfred Mott. but these characters served the exact same purpose in their stories as others who have been banished to the "narratively ambiguous" section; River Song, Rosita, Jackson Lake, Adelaide Brooke.
i wont go any further, as i believe the television companions will open up enough discussion of their own. but there seem to be glaring absences in the prose / audio / comic companions - i think the first thing to do would be for an admin, who has rights to edit the companion pages, to go through all the companion categories and place the missing ones onto the templates so they can be discussed here too.