Personally, I don't think "Literary Fiction" has to be "ageless and enduring".
Of it's time, probably - and I don't mean
about ie contemporary.
I always have a vague idea in my head that literary means rather woolly things, I suppose !
Written intelligently, with care, with attention to detail - fine or broad sweeps here - with passion, with knowledge of the subject addressed, with accuracy....
And, vital this, doesn't treat the reader like an idiot?
But I don't have a check list, and I am happy to veer off course if it grabs me - but it has to last the length of the writing.
AND, it has to entertain me.
Oh, I don't want to be preached at, but am willing to be persuaded
Now, stands back and waits for brickbats of outrageous fortune, with my ever-ready cucumber slices over my orbs...