I think I must have more of the kind of waist/hip ratio designers design for. Have you looked at Sewaholic? I think they design for a larger difference between the two measurements, so might work for you?

The Agnes is definitely more fitted than I want, though I can't quite work out what it is I *do* want apart from "long sleeves, not fitted, not fussy or girly, but not just a t-shirt". I suspect that actually what I mean is that I do want a t-shirt, just one that looks drapy and unstructured rather than either looking fitted or having that very straight look that non-fitted t-shirts can have. Possibly a more A-line t-shirt?