The Hammer from the Malakath quest remains a credible weapon until later in the game, and can be improved. Doesn't hold a candle to a double enchanted, mega-smithed Daedric warhammer though. And my most recently crafted Daedric bow is less and arrow-hurling device than a 26th century nano-tech death ray that pretty much one-shots anything.
Kind of a shame, really. The coolest looking weapons in the game wind up being inferior to the more generic ones you can sploit-craft up to WMD levels of lethality.
(Though you can name them. That's kind of cool.)