Shadow Lugia

1: Battle Frontier o any worthy substitute.
I really miss the Battle Frontiers. I thought they were fun and challenging. Practically Emerald's Frontier. The Battle Subway & Battle Maison, while okay, did not fill the hole.
I want the Battle Frontier back (preferably like Emerald's), o at least a worthy substitute. They were fun little challenges after completing the main game

2: Vs. Seeker
We haven't had the VS. Seeker since Gen 4, and it's a key item I really miss. X & Y should of had it. It was great fighting the trainers tu defeated again. It also help with training your Pokemon.

3:...