Well at least its fun.
It seems like pokedex mons are ones missing from gen, but question is if this are all.
Only 7 shown.
So 20- 7 - 2 (new ubs) = 11 pokemon we still dont know (but it could be -1 on fusions)
So as for trials:
Mina - Faily
Ilima - Normal (could be repaced with some1 else)
Lana - Water
Kiawe - Fire
Mallow - Grass
Sophocles - Electric
Acerola - Ghoust
Guzma - Bug (since there is new evil team)
Hala (grand trial) - Fighting
That elite 4 flying memeber with a gold cub (the part of a golf-field could be a trial) - Flying
Plumeria as trial captain - Poison
Hapu as trial captain - Ground
Olivia - Rock
Molayne - Steel
No idea, but one of the new enemy team could give it to you - Psychic
New character - Ice
The dragon guy from elite 4 as last champion - Dragon
Nanu - Dark
New type of z crystal for uber beasts only?
This is how i predict.
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Also this:
Maybe we get it as secret breeding betwen torkal and turtonator.