I don't think it's not necessarily unworthy or even unlikely (Alex Kurtzman producing and the success of the JJverse are strong data points) but it does seem less appealing to me. I'm frankly tired of all the reboots and general unoriginality in today's pop culture. I feel like a Star Trek set in an alternate timeline but still in the past compared to where we left the previous timeline is just a rehash of what I've already seen. It's the same feeling I got watching Into Darkness. Am I supposed to get excited because your making references to a movie I already saw; a better, more successful movie?
Yes, I consider Wrath of Khan more successful because it helped revitalize the franchise, had at least 4 sequels, has been imitated by multiple other movies, is on many "best sci-fi movies of all time" lists, and we are still talking about it today.
But I digress, the point is I don't want to see a different version of something I've already seen. Especially Star Trek which is about looking to the future and new possibilities. The reason I support the 100 years after TNG setting is that it can appeal to both sets of fans. It sets itself apart from everything before but doesn't erase it either. Doctor Who did this when they rebooted in 2005. It was set far enough ahead to separate itself from the show that was canceled in '89 (in part due to the popularity of TNG) but it didn't erase the long history of the show either. Thus keeping its old fans while creating new ones.
I think many of you are focusing on two data points and ignoring everything else. Paramount and CBS are two different companies and don't necessarily get along. The short term success of two movies doesn't necessarily erase the success of a 50 year franchise that has created more content than any other sci-fi franchise. Not to mention part of the success of those movies is the Star Trek brand recognition, not just the fact that the new movies were directed by JJ. So the hardcore fans saw those movies as well. The new fans, the ones that say "I don't like Star Trek but I like the new movies", those guys don't give a damn what universe this show takes place in. The show won't have any of the stars from the movies, so that aspect of the movies wont appeal to them and draw them in. All they are going to see is a show called Star Trek and if it's well written,has interesting characters, and has some action/adventure mixed in, they will watch it.
I don't know if the CBS execs are using the same train of thought as me. I hope they are but I don't think that either universe is a given. It's up in the air right now an no one can say till we hear more in a few months.