True dat. And in Ai's case, the bridges started to burn after what happened in the duel against Bohman.
Also regarding the @[Ignister]s, the extra deck monsters card-types reflect the type of extra deck monster that were on the board in duels that the ignis first lost all their LP.
Windy: first lost to a Synchro
Earth: first lost to a Fusion
Flame: first lost to a Link
Lightning: drew, (ignoring BS that made his lp 1), though Revolver had an Xyz on the board.
Ai: drew, though a Link monster was on the board
So, the WATER extra deck monster will likely be a Link as Aqua lost to a Link.
Based on Hiyari card text, the last big Attribute @[Ignister] monster is going to be a Ritual monster since Hiyari searches the Ritual spell like how Doshin searches the Fusion Spell.