Though Bungie has no comment on this, I think the points you make are valid and well thought out. Having recently played Halo 5 (where everyone has access to the same guns) and The Division (definitely a grind for the best weapon stats), the thing that I find more enjoyable about Destiny is the way the gun play feels. And having to put aside year one guns (and to a certain extent armor) to play the new content is incredibly disappointing. So much for creating your own unique guardian. My vault is filled with year one equipment that doesn't get used.