I'm thinking of picking up warhammers or maces, instead of axes, at least for the more "full-time" soldiers.
I had 3 pages of report spam from a high master axelord beating a goblin in the head with his +Iron Axe+ to no avail ".. but it glaces off!", due to the goblin wearing an iron helm.
Funny, I'm thinking of having fewer hammerdwarves. I've got an awesome hammer lord who is also the fastest melle type I've got. So he runs out and gets to the goblins first and immediately starts breaking arms and legs. He very quickly reduces the first goblin to a pile of quivering green meat with every limb broken. Then he just keeps pounding and pounding and pounding and pounding and pounding and pounding and pounding until just about every item in the wounds list is red. plus massive internal bruising. But the goblin isn't bleeding at all, and even with two bruised lungs he can still breathe enough to lie there and get pounded on some more. This keeps up until the goblin gives in to pain, and then the hammer lord makes a single smash to the head and it's finally over. And some of these goblins seem to have very high pain tolerances.
In the mean time, the axe lord three tiles away has chopped off both hands and one leg from his goblin, who proceeds to bleed to death in a timely manner.
Given that my primary opponent is goblins, who tend to wear iron chain mail and iron helmets in this world. In others it's bronze or copper, and maybe breastplates instead of mail shirts, but it's still a body item and a helmet. So axes of any metal still work just fine for removing hands and feet. Chop off a goblin's hands and feet and he harmless, can't run away very fast, and will bleed to death before too long. Hammers on the other hand, also work well for disabling and immobilizing the typical goblin, but don't cause bleeding. So hammers have to keep pounding away, breaking fingernails, toenails, nose and ear cartilage until they finally manage to get a headshot. That seems to be the only way a hammer can actually kill something.
If you often end up fighting fully armored opponents, then the hammer would be very nice. Maybe some of the high-combat mods provide such opponents, but I never see them in vanilla.
Now, other sorts of things like forgotten beasts and megabeasts require other weapon considerations. It seems like big critters are best faced with spears. And FBs are best handled from a long ways away with crossbows to avoid their assorted nasty breaths/dusts/blood/spittle/vomit/body odor/flatulence. Cave-ins also seem like good weapons for FBs.
I'd nuke them from orbit if I could, but my smelters don't give me the option of smelting pitchblende. Forging rocket nozzles also seems to be missing in my worlds, too.