Crafting is a must for non-magical characters in D&D. Traps, arrows and bombs for those classes that don't have the means of AoE etc. is a must imo. Implementation is the key. As already stated you need a COMPLETELY separate inventory for crafting materials and a quick list of all the recipies known by class or learned via bp. You craft items on long rest like traps and stuff in 5e and you can only craft a certain "gold" value in base items per rest, 5gp I think I don't remember. Even scribed scrolls for mages etc.
Larian have already said they are implementing a crating system so I think the best feedback would be how you would like it implemented rather than if you would like one or not. Have the ability to disable the crafting system if it bothers you that much. I agree however the last thing you want is 5000 items lying about with no idea what they do or needing to read 50 pages of a wiki to figure out crafting recipies.
