I think the case still holds an allure to amateur sleuths for a number of reasons, not least because it happened in the relatively early days of police photography, police records, detailed autopsies so is right on the cusp of the beginnings of modern policing and crime scene investigation. The...
Poetic licence - the gag works better with male names.
Does it really matter? I daresay it matters to the family of the murdered victims in as much as positive identification would provide more information about the killer and his motives, as well as providing some closure.
His known descendants - Edward the Ripper (b. 1891), Bertie the Ripper (b. 1922), Charlie the Ripper (b. 1949), Jason the Ripper (b. 1985) and Tyler the Ripper (b. 2012).
I watched an interesting documentary that first aired in October 2009 that asserted the killer was mortuary assistant Robert Mann. They used modern police profiling techniques in their appraisal and I was left thinking their argument was highly plausible.
I'll be interested to see how the DNA...