I'm curious as to why you guys level up every exotic?
There's only a select few that I use in PVE and the PVP exotics don't need to be upgraded.
Cos we crazy.
And you never know when something might get buffed or debuffed. I usually just fill the bubbles on all my weapons and only fully upgrade weapons that I use constantly like my Ice Breaker since I expect them to have 3.0 versions in House of Wolves