This thread will be tightly moderated to keep discussion focused.
An excerpt of the post where this idea is conceived, by user SimonSays in State of the Game:
... The idea I had was that, with the advent of Flying Press being dual-typed, and the ability to Skill Swap multiple -iate abilities on one Pokemon to have multi-typed attacks, why not open up dual-typed combination attacks? But only those that would, following the current chain of type-priority, be typeless?
And another, this time from the ASB Handbook on the heart of the matter:
Combination Types / Type Priority
The type of a combo is the other slightly more complex attribute of a combo to calculate. Each move has a field called CT, which stands for Combination Type. This is an indicator of the dominance of a move's manifestation and, by extension, how likely it is for the move to retain its type when used in a combo. The type of a same-move combo is always the same as the type of the move, and the type of a different-move combo of two moves of the same type, the combo's type is the same as the type of the two moves. For different-move combos whose moves have different types, you must first compare the CTs of the individual moves. The CTs are as follows:
Whichever move's CT is higher up in the ranking is the one whose type is used to determine the combo's type. If the CTs are identical, compare the Base Attack Powers of the two moves. Whichever move has the higher power is the one that the combo uses the type of. For this purpose, non-damaging moves defer to moves that deal direct damage. If both attacks have the same CT and the same Base Attack Power but the Pokemon gets STAB on one of them, then the combo uses the move that the Pokemon gets STAB on. If both attacks have the same CT and the same Base Attack Power and the Pokemon gets STAB on both or neither of them, the combo becomes typeless. Like a typeless attack, a typeless combo is never affected by STAB, weakness, resistance or any effect keyed to typing.
- Set: Typing is such a fixed part of this attack it will override all other types.
- Force: Typing defines the attack to such an extent it will override elements.
- Elemental: Typing defines the attack as imbued with an elemental property.
- Passive: Typing is part of the attack but is not definitive in its use.
- Deferring: This attack is easily redefined by the qualities of other attacks.
- None: This attack cannot be used in a combo.
IMHO, this discussion could be relatively straightforward:
- What changes it might bring to the ASB metagame?
- Do we, as the ASB community, want to implement this, after considering the potential ramifications? Why?
Fire away ^_^