What I think would have been really cool for a reboot of the series would have been to go with Captain Christopher Pike. He is already an established character, but so little is known about him it doesn't matter. They could do pretty much anything they wanted with him. He doesn't even have a reputation as a Captain (i.e. Kirk being a flirtatious sleaze, or Capt. "I am going to go listen to some Mozart, read some Charles Dickens, and sip some Earl Grey tea" Picard) so they could still develope his character as they wanted. And whatever actor you get to play him would fit because there isn't a set standard to live up to. Even inventing a new capt. and crew could be interesting.
If they are truly trying to appeal to a wider audience as they claim, then why use old favorites when they won't be the old favorites of that wider audience? Star Trek fans are going to go see this one way or another, so you know it is not for their sake. Most ST fan will probably hate the new actors portraying these legendary characters anyway, so even more evidence it is not for their benefit.