Pokémon Keeps Spoiling their Remakes with Redundant Repetition!

As excited as we all get to revisit a past Pokémon region, the people in charge at Gamefreak seem to be attached to one particular trick that actively harms the remakes or Legends games, that being they shoehorn in as many of those same Pokémon as they can immediately before the remakes come out! Meaning we see far too many Johto Pokémon in Sinnoh, just before we see them AGAIN in HGSS, but if you just used them why would you want to do it again? It lessens the thrill of seeing these Pokémon come back if it's like they never left...