anyway , one of the main problem is not if the ingredien are burn or not in fail....
For now , the problem is the need to burn a "copy" of the item you want to upgrade...
That mean this sytem is only to be use by L item , and by some craftable cheap UL item...
Most of the UL item will never be upgrade , due to the need of the next item...
This mean , 90% of the player base , who work their ass to get some valuable UL item(mainly with big deposit) , can not use the new feature...
I understand MA dont whant to see some player have tier 10 Mod Merc SGA ( but who created such over un balanced item ?) ... but then there was many solution to make it.
for exemple make the tier unlock with HP killed , and put a very very big number, or use very rare ingredien to alow the upgrade... if 2 or 3 big item get upgrade per year its not end of EU...
But , this would have make the things looks a bit ridiculous , but at least give hope to player...
What that new feature managed to do , is to remouve the hope at 90% of player to get better in future...
I think it sad , and stupid , to waste a nice feature like this one , due to stupid requirement to use it...
Many player did ask for such things for many years ...yet you make it a way they can not use it ...
It remind me the story of the armless kid jumping in front of a shelf screaming " mum , chocolate , mum , chocolate"...and his mother watch him and say " no arm , no chocolate"...