Keep in mind that Aeroll has no damage capabilities. Mailshure has Whirlpool, Feedback(AWESOME), and Bubble Shower.
The main reason you'd want Mailshure is Feedback because most skills in game are magical. (Has a Sleekyr with Counter)
In addition to this, you haven't posted which rune you're using which can affect your lineup. If you're using a rune like the Eagle Rune, then you might wanna replace the Rairyu with Mailshure at first, then see if you wanna replace the Mailshure or something else with the Kazeno.
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