I have killed all bosses except crucible and soon max level but I cant get any items over level 11 to drop. I think my realm is bugged or something. I also have 60 hours in the game so should have been dropping for a while now. I
Item levels are not really important anyway, any weapon or armor can be upgraded to the same level and give the same defense or offense, if they are of the same material and class, plate and so on, what changes are the sloted gems and so on, the affixes.
I wouldnt worry too much about grinding gear, the wipe is coming with the big update, so what if you find that ubber sword, its gonna be stuck in your old legacy realm, imho you should play to know the areas and enemies, have fun and than erase everything before the wipe.