Those are some great tips and that's pretty similar to how I've been playing. I was wondering why I was getting more blue loot drops with some regularity, but I thought it had more to do with my level (18-19) until I looked into that Scavenging ability. Pretty cool.
 
I've played with all weapon types so far but I seem to gravitate towards equipping an AR as my primary, a marksman rifle as my secondary, and a shotgun to polish off those that get too close. A good marksman rifle I find to be very useful in the Division as you can pick off (headshot) lower health enemies and also give good chunk damage to any purple/yellow shielded enemies.
 
I suppose I haven't been paying attention to vendor inventory as much because I sell off anything that I don't currently need. Is there a vendor that sells weapon skins? The only one I have is the skin from that one Uplay 30-point unlock you can do. 
 
I still haven't seen a sawed off shotgun drop so the drop rate must be fairly low.
 
As I've progressed I like to clear out sections of the city one by one and complete all side missions, find the collectibles, and complete each story mission on hard. However, there are two stupid ECHO recordings that won't disappear from my map so I was curious if anyone else had the same issue. There is one in Chelsea that appears stuck inside of a building and I spent far too long looking for an entrance but I think it must be a glitch. The other is in Tenderloin and of a recording of a guy with an asthma inhaler that gets torched by a cleaner. Your ECHO progress shows you've collected it but it stays on the map, so it must be an error and hopefully it will be fixed later.
 
Still having a blast with the game. I think I've added or accepted most everyone here, but if not I'm
Motiv7 over in Uplay-ville.
 
 
Hi pasports31!