English is not my main language, sorry for misspells
Xur is pretty bad right now, rarely he have a decent loot and i think that the last time he was really "on the hype" was the day that "The Scholar" was being sold.
1 - Red Borders should be on him, do just like you do with seasonal weapons and let him give 1 red weapon per week.
2 - Exotic Stuff still decent but the stats sometimes are bad, i think that we should have a set stats of 65 on our armours.
3 - I know that generic guns are importante to make special guns special, but Xur should be guy that sells amazing stuff, i think that his loot pool should be more interesting, dont really know how but would be really cool to see 1 time of the month that xur would sell one Raid, Osiris or Dungeon weapons.
4 - OY, We got lots of maps, put him in other maps too! Europa, Moon, Cosmodrome! Or if yall dont really want to bother with that, give the traveler Xur loot to the Eternity Xur
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Give him a whole collection of unique gear to sell and make him a source of glass needles again.