The Battle Frontier was at its peak at its inception, in my opinion. The very first Battle Frontier in Emerald was by far the best, and every battle facility since (be it the Sinnoh/Johto Battle Frontier or the Battle Maison) has been a watered-down version of the original. Which is a bit disappointing, to be honest, because Emerald's was so well done. It reminded me of a theme park, both because it is laid out a bit like a theme park in the game itself, but also because I was on a grade 8 trip to a theme at the time I beat 2 Frontier Brains back-to-back, so the memories of the real-life theme park I visited and the memories of the Battle Frontier are nearly synonymous.
But anyway, enough rambling from me, and on to business:
Even though the guild is small at the moment, I still want to do something for Halloween, even if only 1 or 2 people end up participating. Halloween is one of my favourite times of the year, and must be celebrated as such. I had a few ideas for events we could have:
1) When having battles in the guild, you must use one Pokémon that comes from a spook-tacular list (Pokémon like Gengar, Crobat, Ariados, etc fall onto this list). If your spook-tacular Pokémon faints, you automatically lose the battle.
2) Using the same list of "spook-tacular Pokémon" above, we all choose one Pokémon from that list and breed the best possible version as we can. On Halloween, we take unhatched eggs of our chosen Pokémon, and distribute them out as "candy" to those who "knock on our door" (PM/VM us).
I'm open to other suggestions as well.