Remove account bound and SoA
I don’t think legendaries should be able to be sold in the first place so that part of your argument means very little to me. It’s kind of pathetic to call it a legendary and claim they show a person has played a lot as Anet has when someone can just BUY one with real money their first day playing.
Also considering dungeons are already the fastest and easiest way to make money without messing around on the TP constantly I have little sympathy for you wanting to make MORE money at dungeons. You just can’t make the kind of money you do in dungeons from general PvE or WvW so I hardly think it needs another bump in profitability.
Otherwise, I am inclined to agree ascended items should not be soul bound/account bound but the rest of it should be. They are things you should have to earn by actually playing the game.
Legendaries are meant to be tradeable since they are soulbound on equip.