Tempering is fun and exciting. if you brick it move on. act like you never had it. If you are afraid to temper an item that’s a YOU problem not a game design flaw. if you had the perfect 3GA item and tempered it perfectly would you be mad or sad about it. i bet you’d still wish to sell the item for the gold you could of had instead of the marginal gains you got from tempering that 100 crit damage instead of the 85 crit damage you already have.
If items weren’t rare you wouldn’t get that endorphin hit of YES!! SOMETHING GREAT!.