>>35845903The Battle Hall was actually my favorite facility, but other than that the Gen III Battle Frontier was better. Not only for having more facilities over all, but for it being like a huge theme park on an island. Not only did you have the five main facilities, you also had lots of little buildings containing important NPCs like move tutors and shops to trade BP. That was a lot better than the way it is now where they just stick a person in a small booth right outside the battle tower asking for BP to teach moves or give items.
You also had Sudowoodo and a cave full of Smeargle, so there's really a little bit of everything.