It would be nice to have more control over crafting items and fusing items. There have been ideas suggested that are similar to this, including breaking down items. It has been mentioned that there will be some adjustments to fusion times, but we do not know for sure if that will ever happen.
It has also been suggested that there be additional qualities or ways to modify items. The problem with this is adding too many new options to search on the Trade House, especially if it is variants of the same effective "quality of an item" like Legendary A or Legendary B. Modifications to items would probably have to be account bound, or the Trade House would be near unusable, even with filters.