I liked Tinker, Tailor, but if anything there were too many great actors in it, that there wasn't enough for all of them to do. Stephen Graham was a case in point, whose part in any other film would've been played by an interchangeable jobbing D lister. But here they've got Stephen Graham, and he just feels a bit wasted because of it. Toby Jones too, despite having a high ranking role, didn't have a lot to do, ditto Hurt and to an extent Strong. Hardy put in a good shift, and got to do a bit of pathos, Firth got a nice bit of meaty smarmyness and Oldman of course just dissolves into is character, but I spent so much of the film wishing more of the characters were in it more often. There should've been some kind of group act off. Or an added scene where the whole cast get locked in a room and start shouting at each other out of demented paranoia. Just the whole cast in a room for an hour and a half. I'd watch that.
Good problem to have though of course. It's hardly a fault. More a frustration. I hope they do the follow ups.