I’ll wait for the inevitable ST box set when all is said and done before I buy TFA again (assuming such a set will include the new features). One commentary isn’t enough for me to pony up for 3D, given that I don’t have a 3D TV.
I won’t rebuy if/until it comes out in 4K. Even though I don’t have 4K now, I’d like to future proof my SW collection even if I don’t yet have the means to play it.