Because the hack includes all 493 Pokemon up to Gen 4, you can build teams that were impossible in Diamond/Pearl. Want a team of Electivire, Magmortar, Rhyperior, Togekiss, Weavile, and Yanmega? You can catch their base forms before the third gym.
Drayano’s vision for Storm Silver was to keep the charm of the original Gen 2 story while introducing content that reflects modern game design. Expanded Trainer Battles: pokemon storm silver