Alrighty then.Hmm, that's a fair point, can work too.
Also, I'm a Waluigi fan for the record, but no offense taken.
Anyway, as for other Layton related spirits besides Don Paolo.
* Ness or Lucas for Luke, leaning a bit towards Lucas there due to the Rope Snake and his deeper connection with animals in his game. Animal based items would be involved too such as the Cucco and Pokeballs.
* Sheik for Flora, who would later become Daisy, both would avoid conflict, while a few Megaman minions fight for her.
* Zero Suit Samus that mainly relies on roundhouse kicks for Emmy, with the Fatal Frame Lass as a hostile Assist Trophy.
* Palutena for Katrielle with a minion Pit and Duck Hunt Duo.
* Meta Knight (or Joker if we can) for Descole.
I think those are at least a must as far as Layton spirits go.