>>33527640>>33527648Platinum has the Frontier too, but HGSS keeps it while adding its own unique content like Pokeathlon. You wouldn't brush off Subway or Contests even though they've been in BW1 and RS, would you? So why wouldn't Frontier count as a positive for HGSS?
Also, to compare
>Frontier (E)7 battle facilities, all with their own unique gameplay modes. Tower is co-op compatible.
>Frontier (Pt/HGSS)3 unique gameplay modes, 2 reused from Emerald. All facilities are co-op, and allowed for online play
>Subway and PWT1 unique gameplay mode, the rest are reused and made even simpler than before. PWT is not streak-based. Gym Leader/Champion challenges go off base Subway rules rather than providing a unique experience. Only Subway is co-op, and isn't available online.