in my opinion .. the "re-roll" will work better if we need to put 2x current SAME item as pre-requisite material ..

For e.g.
to re-roll one Enchoing fury .. u need 2 more legendary enchoing fury .. this will make the item hunting more interesting and increase the legendary item value

upcoming hotfix by blue post :

Without further delay here is a list of the changes that will be coming in the hotfix.

The Bad!
Unique monsters now drop less items.
*Uniques were dropping far more loot than their difficulty would warrant.

Chest spawns have been thinned out across all acts of the game.
*Ideally chests become less common and something that players can’t flip games to farm. It is our goal to make them feel exciting and rewarding when you find them.

The Good!
The bonus legendary drop rate for rifts is being increased from 25% to 100%!
*This means that while in a rift your chance to find a legendary item from monsters, chests, elites, and everything else is double what it is outside of rifts. No this does not mean opening bounty bags in rifts is the new hotness. ;P

Kadala’s legendary drop rate has been significantly increased.
*Blood Shards are meant to be a compelling element of rift rewards and something players are excited to get.

Loot is an incredibly important aspect of Diablo games and we will continue to keep a very close eye on it. If more problems arise we will continue striving to address them. It isn’t our goal to take loot away from people, we just want to make sure they are having as much fun as possible while finding it and these changes all support that goal.