My hopes for a hypothetical yet desired unofficial contest:
Doubles all the way. No restrictions on certain Pokémon being in the battle rounds. This will give all of Hikari's Pokémon time to shine,
Appeals: Manmoo and Togekiss. They haven't done an appeal under Hikari and they look as if they could be an interesting pair.
1st battle: Pachirisu and Hinoarashi against COTD. I've always wanted to see this pairing similar to Manmoo and Togekiss.
2nd battle: Pochama and Mimirol against Nozomi. Hikari would win. Pairing for the symbolism that Hestia mentioned. I'd want to see Erlade again as I liked how they animated its general movements in the GF final.
3rd battle/final: Togekiss and anyone against Urara. Urara would win and have a Gen V Pokémon on her (Chandelier Turtle) as well as using Gabite or Showers.
We'd also have Musashi lingering around pretending as if she doesn't have any interest.
Well, I like your idea Iteru, but wouldn't it be a bit long for one episode?
I do want to see a Togekiss/Mamoswine appeal though.
Oh, and I love the idea of Jessie watching in the background.