It doesn't seem to have occurred to anyone in the fandom (as far as I've seen at least), but there is a link between the many Susan Twists throughout the (4th to 15th) Doctor's timeline, and the earlier, but just as canon, plot point of multiple Claras and Great Intelligences throughout the (1st to 11th) Doctor's timeline.
That means there is a considerable possibility for interaction between those characters. Many many possibilities.
Ripe for fanart etc.
You could even start shipping Clara with Susan T, I don't see it yet, but I could do.











