Think crafting is one of the most challenging aspect of the game to make fun. Though some just like making stuff.
Mini games IMO are bad because usually they get boring and become tedious. Maybe just my opinion but any repetitive sequence can be boring.
I had ideas of traditional click crafting but being able to train an apprentice to do the work for you. For example you build a mine to gather a resource. You can hire a miner once you are grand master.
Another idea is to have a crafting wheel like wheel of fortune. Where when you craft depending on your skill you will create random range of quality with rare legendary for grandmasters. Sadly this kind of gameplay would likely be exploited for cash shop in this day and age.
What do you feel like they could do to make crafting more than click and produce?