I think at the very least, NT should have made negotiations with someone like Digital Theatre and all other involved parties to at least release a digital (copy-protected, natch) version for those of us that can't make it to any cinemas that are showing their productions, even if they don't make it available until a few months afterwards.
I live in the Seattle area, and there is only one theatre locally that does NT Live broadcasts, and sometimes it really is a pain to get into Seattle from where I am to watch these (though I did make it to Fela!, both versions of Frankenstein, and The Curious Incident of the Dog in the Nightime, and I've loved all four of these presentations). If not DVD/Blu-Ray releases for whatever reasons (not cost effective or whatever), at least digitally then so you won't have to factor in the cost of a physical product.
I know that there is a high demand for these also, as I heard that there was a report of someone at one of the Seattle showings trying to video one of the encore screenings (he got caught though, and the SIFF people who presented the shows locally sent out an e-mail about it to those who are subscribed to their newsletters).
I would have loved to have seen One Man Two Guvnors by the way. I wasn't able to make it to the initial screenings though (I was out of town), and they never did encore screenings for that one, only Frankenstein.
Xanadu! Can't cry on cue!