But for full frame bodies, the only "option" for an all around is the EF 28-300mm L.
EF-S 18-135mm on a crop is equivalent to 29-216mm (1,6x crop factor).
So, an 28-200mm EF lens makes a lot of sense, since on the EF line up there is nothing similar, and IMHO 135mm isn't enough on FF bodies...