So I suggest for a patch that the type of loot that can be processed to earn smithing levels be the same as the perk tree, get to high level and you will need to smith daedric to level up smithing (and thus your overall level). Then to level up will have to bring back some dwemer metals from the ruin and not just leather bracers from all the elk that you shot on your way back. It is rather silly the perk constellation has you advancing in materials skill, yet you don't have to actually use those materials to advance smithing and character level. This will bring the smithing levels more in line with the natural skill up the game promised.