It depends on what kind of mood I am in. Drama can be good, pathos can be good, visually attractive can be good, what i seek varies. A sexual element is often an attractor but is not vital for a crux as an appropriate part of a well thought out story can be entirely effective without sex or as a piece of art.
Clothed crux also does not necessarily mean unsexy crux either. I think essentially I like crux for is variety, an image, an icon, a toy for play, a tool for torture and punishment, a final condemnation and execution...a new hope rising...it has so much entwined symbolism and multiple meanings that I find it keeps drawing me back more than most things.