I recently finished reading That Hideous Strength, and despite my great enjoyment of most of the story, I felt let down by the ending. It was so ... unsatisfying ... to resolve all the conflict by
taking advantage of a loophole in the celestial laws which enabled the foreign Oyeresu to act more directly than had been thought possible, and sending them to Belbury to slaughter everyone.
In particular, it felt as though, in the final analysis, Ransom's 'Round Table' crew (the Dimbles, the Dennistons, Mr McPhee, Miss Ironwood, and the rest) contributed nothing to the victory. Jane did, because her visions helped to give them the knowledge they needed of the N.I.C.E.'s activities, but all the rest seem like pointless bit characters, rather than (as I'd hoped) each one contributing something indispensable and all of them working together to defeat the N.I.C.E. What was the point of Ransom gathering all those comrades if they never actually contributed anything to the struggle?