Some items blacksmiths can make:
Cobalt set (http://www.wowhead.com/?compare=39085:39084:39087:39086:39083:41974:39088:41975#modelviewer:2+0:0)
Required level 70
Stamina 362
Strength 261
Armor 7459
Defense rating 288
Tempered Saronite Set (http://www.wowhead.com/?compare=40669:40671:41116:40672:41114:40673:40674:40675#modelviewer:2+0:0)
Required level 78
Stamina 543
Strength 300
Armor 11052
Defense rating 410
because of the higher def cap, some of these blues are more useful than the early craftable titansteel epics that blacksmiths can make.