I agree, its gotten better, I still don't care for their cartoony-like vignettes to showcase some of the historical figures. IMHO, its still not as good as TOS, but we have all gotten a bit more informed and not as in awe of space and the universe as we used to be.
Both Carl Sagan and Neil DeGrasse Tyson rock as hosts and presenters, and while there are new ideas to present, a large body of the evidence is stuff that science has known about for a long time , and its still relevant like it was in TOS
Brian
(TOS= the original series)