true, but their are going to be must have spells unless they make flavorful versions in other schools. for example i don't know of anyone who doesn't put at least 1 form of enchantment and equipment destruction. Teleport is an auto include in all my books. some form of anti flying and anti avoidance is a also a must have. lucky their are many viable variations of those two effects.
they have kind of done this with equipment using explosion and steal, but their costs are way to high to be a viable alternative to the basic dissolve.