I like xur, I've found most of my exotics but you need xur to complete exotic bounties. An you still have to grind if you want to have strange coin. Also, xur doesn't sell raid guns or gear. The exotics you find in a raid are a rare 2% drop I believe. But xur would never sell vision of confluence or something 100% raid specific. So the grind goes on. I do feel you on the exclusive feeling you get with a exotic diminishes after xur sells it. However, if this is going to be a universe expanded on, where gear is added, in a few years the guns we have now will hold true to there exotic name tag. Maybe xur should retire certain weapons he has sold multiple times.