I'm re-watching Old Who myself, right now- I have just begun on Six. :)

Funnily enough I like Tegan a lot more on re-watch. The first time around I just found her bitchy. But her character also suffer the same as Nyssa's- a total lack of even trying to dig into things that seems blatant. You kind of have to look at her side-ways to see that she is kind and caring and really hate violence. Plus she suffers from having been cast to "be something for the dad's".

But Nyssa is still a favourite. :) And The Keeper of Traken and Logopolis are great stories, I think.

I hope you like it when it's finished then! :)