Short division

The fundamental difference between 20th century Doctor Who and 21st century Doctor Who is that in 20th century Doctor Who the Doctor did not need or want a family. A (grand)daughter surrogate, certainly, but not a whole family. Perhaps only because the Time Lords were still out there, but.

The fundamental difference between Davies Doctor Who and Moffat Doctor Who is that Davies seemed to believe the Doctor is not to be allowed to acquire a family and then keep them.