Keep track of the recurring companions the Doctor has in the paragraphs below.
So Nine didn’t have anyone coming to visit him from previous seasons because the show had just been rebooted and the entire show needed to be established. In addition, Captain Jack, Mickey, and Rose’s mom Jackie were introduced. Nine had four people in his crew.
Then came Ten, who started with this same crew. Throughout Ten’s tenure (see what I did there?), companions cycled in, cycled out, and cycled back in again. Sarah Jane came for a visit, Rose came back for a visit, Mickey and Martha too. Ten had Rose, Donna, Martha, Jackie, Mickey, Captain Jack, and Donna’s grandfather as major recurring members of his crew. That’s seven people.
None of these no old companions have come back to visit Eleven, and that is my biggest beef.