Imagine if BDSP kept contests the same, added an improved Battle Frontier that doubles that of Platinum's, was coded fully and well on the cartridge alone at release, looked better, kept the old underground secret base decorations and even added to its functionality, added several more new postgame areas, included actual ways to capture excluded gens 1-8 Pokemon within the game itself by expanding the postgame wild grass tables, Pokeradar tables, mass outbreak tables, gift Pokemon events, and in-story regional dex, didn't hardlock legendary encounters like Arceus, Mew, or Jirachi behind buying the other games, yet kept Fairy type, the Ramanas Park encounters, stronger League, and removal of HMs.
