The series since its inception has come a long way. It was a bold attempt to put out something different in the sci fi arena while trying to do it in the 80s time period. While each season has operated on mostly the same premise, the show has done an excellent job of sprinkling in new characters and plot lines to keep it fresh while also remaining true to itself. The casting for the most part has been excellent. I'm not sure all of the new characters were spot on in Season 4 , but they don't damage the end product either. The filming, editing, and music are done with tremendous skill. Each season has had its upsides and downsides (pun intended) but overall the conclusions have all been quite satisfying leaving you wanting more.

It does feel like they are ending the show at the proper time. Sometimes some of the best movies and shows have a difficult time closing the story , only time will tell if they can find a respectable way to tie it all together.