If the modern finals system had applied in 1998 the Crows wouldn't have had to play Melbourne at the MCG in round 1 of the finals.Under the modern system they wouldn't have won the flag in 1998. They finished outside the top four that year, lost a finals game and still got a second bite at the cherry!
Instead, if the modern finals system had applied in 1998, the Crows would have played Essendon at Footy Park in round 1. This would have been an entirely different game and, even though it would have been an elimination final, it is highly likely that the Crows would not have been eliminated.