They could do both a remake-reboot and a seperate ST with the original cast.
If they go with ST originals, everything should be consistent with the OT, IMO.
The other day, I was very surprised to see another little brunette from the mid-'70s. She didn't look like Marie Osmond, and heavy make-up may have helped, but, deeyaamm, that was one smokin' HAWT looking 30 year-old chick. I'd bet dollars to dimes they could get CF looking like a hawt 42.
If I had to choose, I'd want a R-R.