The Season 4 finale felt like a pretty definitive end, complete with hauntingly beautiful musical montage in the final scene.
Personally, I’d be open to a Season 5 and beyond, but I’m pretty satisfied with how Season 4 came to a close.
If we never get any more of the adventures of Sherlock and John, I’ll be okay with it.
The first three seasons ended with the fates of our heroes in question, and so the hiatuses were pretty painful for those of us who were anxiously awaiting answers.