What if harps were standard equipment?

Harps are used in some orchestral compositions, but by no means all of them. In common with the woodwinds, harps would not make a huge audible difference when the entire orchestra is playing loudly, but in the quieter sections, having a harp involved makes a profound difference in the sound. What if harps became as standard in orchestral instrumentation as clarinets? If a composer would do that, it likely would give his music a very unique identity.