I don't mind less metals, as long as other things are workable.
One of the things I liked in 40d, was making bolts out of goblin bones. With these, my squads of champion marksdwarfs shot the next goblin sieges with. And then collected their armour to make our own iron armour and weaponry, as it turned out there was not much iron on the map that I embarked on, and no flux stones. So steel was valuable.
Might lose a dwarf on occasion, particularly in the early years, when we had just leather armours, but we had many migrants and children to replace them. It was great.
However, in later versions, the performance of leather armours and bone bolts (and crossbows in general?), seems to have fallen off quite a bit. Injuries that are serious enough to render a dwarf non-combat, or worse, non-economic, seem a lot more common too.
A lump of rock on a stick, as a crude war hammer, might be in order, I dunno.