Maces are good, yes, but what about true blunt hammers? Warhammers are very weigh, you can't take shield or use magic (If you wasn't in Oblivion of course).

Original Mod add 8 1h Hammers in Skyrim. 
It's iron, steel, dwemer, elven, orcish, glass, ebony and daedric hammers. Hammers get more damage and DPS, but slowly then original maces. 
Can be craft, buy or find by enemies. 

Dawnguard Mod add one hand Dawnguard hammer. You can buy it in Dawnguard Castle and be improved. 
Can be improved. 

Dragonborn Mod add one 1h hammer in Skyrim. 
It is a Nordic Hammer. Hammer get more damage and DPS, but slowly then Nord Mace. 
You can craft or buy it. 

In Steam Workshop