As usual, I'll probably try a bunch of experiments at the start of the month to see what sticks, but my initial plan is to work on a scene expansion system to write coherent interactions between characters, with the scene parameters dictated by a plot generator. (Either tree-expansion one I came up with last year, or a new one.)

Other promising avenues include word2vec, neural networks, and wave function collapse, which has had some interesting experiments with text already by @mewo2 .