The ratio of Roland Deschain to The Man In Black/Walter.
As most of us are aware, when a big name actor is cast for a project, the studio they work with will want to get their money's worth out of them (a reasonable expectation, of course).
The problem with this practice is that, as all sorts of source material is adapted for television or the cinema, one of these big name actors will occasionally be cast in the role of a character that has real presence...yet does not appear as often as the protagonists. Temptation to "oversell" them by expanding their rate of appearance will thus increase, even if it may be detrimental to how the character ought to be portrayed.
Now, The Dark Tower is a special case because it is based off of source material which jumps all over the place (in a way that works for a literary format) and largely appears to be constructed on-the-fly from novel to novel like the pieces of various Erector sets brought together instead of laid out neatly ahead of time like a pre-assembled toy train track. Additionally, it contains significant chunks of extraneous detail which would not appreciably aid storytelling in a live-action format. To me, then, it is perfectly understandable that certain elements which appear beyond the first three books are brought forward as a means of getting the uninitiated on board and cognizant of the stakes while still leaving room for a journey to unfold, so I do not begrudge the filmmakers for making Walter more visible than he was throughout The Gunslinger up until the end of Wizard and Glass.
However...I hope the film manages to draw back Roland's nemesis enough to keep some of his mystery still concealed in the shadows.
What do you lot think? Will McConaughey's Man In Black share the screen equally with Roland and then Roland plus Jake, or will his appearances be fewer while remaining especially powerful?
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It is a tale told by an idiot, full of sound and fury, signifying nothing .