ESO originally said that Crafters will be able to make the best items in the game. What they meant by that is we would be able to Improve the best items dropped in the game. With Bind on Pickup for the Trials Gear, that's no longer the case.
So my suggestion to ZOS is to change BoP to Bound to "Character or account" and have it set a Flag on the item to show that it cannot be equipped. Then the item could be traded to a Blacksmith for improvement.
Then if someone doesn't have a max crafter with reduced temper ability, they can get the item improved by a friend or pay someone to do it.
NA Server - Kildair