You say about "if it's stolen you will accept responsibility"... RIGHT.... Every day we see people who kick off about... "My account was stolen" "I share with a friend and he deleted everything" "My characters disappeared" "Some strange account got linked in cross save" All of this from allowing game share or doing a account recovery but do they take responsibility.... NO. And you want more options to link to strange accounts Your post is more like... "I want this but do not want to do the long quest or raid to get it" You expect someone to give you the object so it is then unlocked on your account by doing nothing while the other person gets another out of Collections... And let's not go into the fact that people will pay stupid prices to get a item so they do not have to earn it. There are enough problems with people paying others to win in Trials or Comp for them to get items as it.

Destiny will never have any form of trading/sharing except for maybe temporary loot sharing between the fireteam that you earned that loot with (like the division) but with restrictions such as excluding quest weapons although I think theres only a 5% chance of that happening.

Yeah no

KEKW NO

The best thing to do would just be giving items to people you want to give it normally, bartering on the the other hand, might not go too well, and might go as far as spending actual money. And trading might ruin the game completely as it takes out the fun and thrill you get by earning the weapon on your own.