It doesn't really feel like there's a lot of Die Hard in the trailer for A Good Day To Die Hard, but then again it's hard to say exactly what that means anymore. The first two movies are more or less built around a conceit of "right guy in the wrong place" who's forced to fight his way out of one location. Die Hard With A Vengeance eschewed the "single location" in favor of Samuel L. Jackson's general badassery. Live Free Or Die Hard ditched it all for Justin Long, so...who really knows what to expect from this next outing.
Moving the whole thing to Moscow seems beyond unnecessary and I'm more than a little wary of Jai Courtney as John McClane Jr. While his work on the first season of Starz's Spartacus series was kind of endearing, I seriously doubt he can hold his own against Bruce Willis. Fox seems determined to simultaneously maintain and refocus this franchise, similarly to how Universal has handled the Fast & The Furious franchise; the difference of course is that Vin Diesel isn't pushing 60 years old. I'm sure the execs at the newly Rothman-less Fox are seriously hoping that they'll be able to rest the Die Hard franchise squarely on Courtney's very broad shoulders. We'll see about that.
I will admit Willis's last line seriously made me chuckle, if only because his delivery implies that even he realizes how ridiculous these movies have become.