^Yes I was hoping that too! I think the film will be very meaningful to Ayumi and to see her and Erika togetehr would be so cool!
I have to say, i think what Erika did was very immature and stupid, but i really have alot of respect for her too. She's outspoken. Something you just don't get with Japanese stars. i really like this interview with her. I think the interviewer said it perfectly She has "balls"
http://www.cnngo.com/tokyo/life/erika-sawajiri-548777
And once again, there is such a STRONG bridge between Erika in real life and her character in Helter Skelter.