The Dark Tower is, more or less, amazing. The worldbuilding is just phenomenal. TBH I'm far more committed to DT world than to ASOIAF, but like many of the books I love most I'd never feel inclined to write fanfic for it... You should give it a try.

I'd love people to use this fic as prompts to write other Robb/Jon ficlets. Spilling ever-outward from the centre! :)