We need more stash for item. You add more and more items to the game, but we have nowhere to put it. What’s the point of grinding, if there is no space in the stash?
You need to craft legendary helmets using the dedicated recipes that drop randomly, can’t get them using the random option.
Thank you. I changed the post because the first time I chose the wrong category in forum.
Oh, I can not change title 
TBH - you should have started a new thread. You’ve edited your first post and Sobertooth’s response doesn’t make sense anymore.
Also, the discussion about stash size has been raised many times. The expansion will increase the size of stash some, but don’t expect a lot.