Where do each of the “2 cards in 1” mechanics fall on the storm scale? Things like the Fire//Ice classic split cards, but also things like Aftermath, Fuse, Transform, Flip and the Modal Dual cards.Each one of those is a different thing.
Split cards are a 2, as they’re deciduous
Aftermath is a 7, as the frame was much disliked (I can see us doing something similar but reworking the frame)
Fuse is a 5, as it’s a mechanic that only goes on split cards.
Flip cards (the Kamigawa mechanic) is a 9.
TDFCs and MDFCs are also a 2, as they are also deciduous.
