Really? I always thought it was awesome that it was a Gen 2 pokemon revealed as early as the first episode. Hell, he didnt even have a finalized color scheme yet. back then, he was gold.
Also, its ALWAYS relevant to the plot.
Just like Mew was.
And Entei. (and the other one)
And every Special movie Pokemon.
Its ALWAYS relevant to the plot. Even when they appear in the series. Remember Pokemon Johto? The GS ball and all that [parasitic bomb]?