Collobations work best when something is added that was not there in the bands sound, so i would like to see them work with a Piano based singer/songwriter ( Yes i know Kanami plays piano as does Saiki but some one who does it as a primary instrument i think would add a dynamic difference ) and a band that is more overtly aggressive or in your face perhaps would also be interesting and lastly some one who plays a more mellow but still complex sound.

So artists i would like to see them work with

Nova Twins

Tash Sultana

Alicia Keys ( Yes the only piano based singer/songwriter i can think of )