I don't know why people complain soooo much about this show. KSBKBT is a great show! Let me just get a few things out of the way.
Firstly, Baa is 100 years old. Not immortal. Many people in reality have lived till 120! So I don't see what's wrong if Baa is 100 years old (keeping in mind last year it was Baa's 100th Birthday).
Secondly, it has been the SECOND leap of the show. The point of a leap is to bring freshness in. There have just been two leaps in the show and many people are complaining they have taken too many leaps. Also, they have been running the show for 7 years so it is a bit hard with just one show.
Thirdly, all the characters are well-described so what is there to complain about? Karan-Nandini can be pleased that they will see them again. What else do you want from the creatives?
Fourthly, the current track...no sorry the current TRACKS. KSBKBT is special in a way that it has not one track but many. So it is nice not having to watch one track all throughout.
So I can't really see what's wrong with the show. People are just overexgeratting. This show is doing well and some people just can't see that. I really do wonder; WHY DO WE HATE THIS SHOW?