The poke ball and rotating arrows symbol makes me think upgraded rotation battles.
So I have a random thought idea to go along with the battle stance thing.
What if in addition to altering your stats some (offensive stance has more power while defensive is more... defensive). What if certain moves act different depending on your stance.
So like Flame Wheel in Neutral or Attack Stance is an attack. But in Defense Stance it acts as a shield lowering damage depending on the type of move your for uses.
Like wise a move like Will O Wisp would act normal in Neutral and Defense Stance, but in Attack Stance it deals damage directly.
The more I look at the logo, the more I think this could be a thing. As stated, the japanese logos of XY and SM have both displayed the logo of the gimmick they were introducing, and the "pokeball" in SS's logo isn't just a typical pokeball. To me, it almost is a certainty that it is related to whatever gimmick they will introduce.
The reason I say that the stance thing could be a thing is that the pokeball has a blue and a red half, each representing the colors of shield (blue) and sword (red), or defense and offense. Then, you have these white swirls, which remind me of a rotating motion. I understand why this could also be linked to rotation battles. But due to the colors, I also think this could represent the action of changing between offensive and defensive stances.
On paper, I do think something like that could work. Obviously, there are several ways something like that could be implemented. Would all Pokémon be able to perform this? Would it require holding an item? Can you change stances anytime during a battle? Does it "waste" a turn? What would be the difference(s) between offensive and defensive stances? Would there be a "neutral" stance? And, since this is practically Aegislash's gimmick already - what would happen with it?
The way I would implement :
- Only specific Pokémon can perform the stance change, and it does not require any item to be held. This is to prevent abuses from either already offense gods, or from already defense gods.
- For these Pokémon, you can set up whether they start a fight in defensive or offensive stance in their summary screen. Or, you could also have that Pokémon caught in Sword start in offensive stance, while Pokémon caught in Shield start in defensive stance.
- These Pokémon would have access to two movesets - one for each stance. You'd have some moves that can only be added to the defense moveset, some only to the offense moveset, and some to both. But the effects remain the same - although you could have some gimmicky moves work differently depending on the stance. This means these Pokémon would have access to 8 different moves. I'd make it impossible to have duplicates.
- Changing stance would not consume a turn, but act at the end of the turn. So if you want to switch stance, you first have to move using your initial stance, and then your Pokémon would change stance at the end of the turn, after everyone has moved.
- The stances would have an impact on base stats. It could work differently for each Pokémon able to perform this, or it could be something has simple as +X ATK/SPATK and maybe -X DEF/SPDEF in offensive stance, and +X DEF/SPDEF and maybe -X ATK/SPATK in defensive stance. Could work in %. Don't know what would be best here, but since I would make it so only specific Pokémon can perform stance change, I'd have it Pokémon specific. Maybe there could be an ability change, but not a fan of this.
- To keep something exclusive to Aegislash, it would still work the same with its ability, and the stats change from the stance change from other Pokémon able to do it would be lesser than what it is for Aegislash.