I used to only want legandary weapons to drop in nightfall pre HoW. Already had the exotics I wanted. Allfate is great in pvp but yeah you can buy it so it's a bad drop I suppose. Hours should not be spent on nightfalls anymore. Sooo easy. And finally I think you make a great point/suggestion with the legandary pool for nightfall being at least expanded to nf specific legandary drops. Never considered it but it a great idea. Crucible, poe, iron banner, raids do it so why not nightfall? Excellent suggestion