Yes,
it is additional way of aquiring 4*mats but end result is the same which can be also achieved with increasing drop chance or extra events. I dont believe SG focus should be on features, which are ‘‘basicaly’’ already in game. It doesnt offer any new gameplay, strategy or deepens any relations with other features already implemented.
Thats why I propose this :
https://forum.smallgiantgames.com/t/break-the-meta-add-purpose-to-materials-craft-legendary-items-at-the-advance-forge/193816/9
Unless I am missing something with this suggestion