The creators and fans of Star Trek spinoffs would disagree with you. They're well beyond only three series in the franchise...
That said, the latest info on Legacies shows that it's going to be different from what's come before it. And for me, anyway, that's something to look forward to...
Tonight's ep is an Editor's Pick from tvguide.com:
Elementary Through the Fog (Season 6 | Episode 14) 10:00PM Holmes and Watson race to help Detective Bell when he becomes a victim of a bio-terrorism attack at the precinct and the station is quarantined. During the lockdown, Captain Gregson and Detective Bell begin to suspect they are trapped inside with the perpetrator. Also, Watson faces the difficult task of helping her mother, Mary, accept that her advancing Alzheimer's disease requires her to receive more medical care.
The show is also tvguide.com's #1 Top Trending show...