I think if you give Izturis, Tolleson, Muni or even Goins every single AB at 2B for a whole season, they'd all have a plus WAR value. Not much more than 1.2 or something, but they'd all be better than 0. Not that I'm saying we don't need to improve there.
Just 'cause it's fun, I will deal in hypothetics. If they played a full season, they would accrue the following WAR value...
Izturis = 1.2
Tolleson = 1.4
Muni = 0.9
Goins = 0.2