I recently rewatched all of the HBO series and went on to rread the 1st 3 novels. While doing both it came to mind often if the setting could be handled well using the Pendragon TTRPG. I'm fairly new to Pendragon 6e and are currently awaiting the GM Guide, but possibly using it for ASOIAF is something I'm going to explore more. I've owned Green Ronin's Chronicles engine edition of the setting for year and briefly got it to the table once, but it fizzled with my players. I can't say I care much for it either, but like most of GR's adaptations, the setting content is good.