I watched it on the basis that John le Carre was an executive producer and is obv. bright enough to not let them completely destroy his work. Given it's a 440-page spy novel, firstly reduced to a 5-and-a-bit hour tv adaption, then a 4-hour radio adaption and now a 120-minute multiplex adaption, it works well enough. In terms of themes and plotlines, it's a bit like a drum and bass remix of Ode To Joy, but it has the major plot points and it's somewhat atmospheric.
I'm sure it'll be the start of a successful - if relatively brief - franchise.
(((Harp lager)))