Deathly Hallows and Polyjuice

[Steve]

In the main group, in a chapter discussion of Chapt 16; Godric's
Hollow, this question was posed.

"13. Throughout the cemetery sequence, Harry and Hermione are in
the guise of a middle-aged Muggle couple. If you were directing
the film version of Deathly Hallows, would you drop the Polyjuice 
disguises and have Daniel Radcliffe and Emma Watson perform the 
scene? Or would you film it with Harry and Hermione portrayed by
two completely unfamiliar actors?"

I've been wondering about this and the other Trio polyjuice 
scenes in the up coming movies and how they will be handled.

In the early scene of the Seven Harrys, I don't see a problem
as there are other actors playing their own parts, and then 
morphing into 7 special effects Harrys.

But what about when the Trio go to the Ministry, or as the above
question poses, when Harry and Hermione go to the graveyard.

Will these roles be placed by unrelated actors, or with they
some how come up with a way for Dan, Emma, and Rupert to play 
them?

In the case of the posed question above, I think perhaps they
might change polyjuice to aging potion, then Dan and Emma 
can play the parts with lots of 'old people' make up on. 

In the break ins at the Ministry and Gringott's, it becomes
more difficult for other selected actors to play the roles. 
They can't just play the role straight. For example, during 
the Gringott's break in, Hermione is polyjuices as Bella. We 
have an actress who plays Bella. But that actress in those 
scenes can't simply play Bell, in reality, she would have to
play Hermione. She would have to adopt Emma/Hermione's attitudes
and demeanor.

Equally, Ron, Harry, and Hermione breaking into the Ministry,
can the find actor sufficiently talented to portray Dan, Emma,
and Rupert, because if you can't see the underlying character
(meaning Harry, Ron, Hermione) showing through, then the 
illusion is lost. 

Again, at the Ministry, I don't think aging potion would be
enough, but perhaps, they could using extensive make up,
have Dan, Rupert, and Emma play other characters. The question
here is, is the make up going to be good enough to convince
me? 

I see all the polyjuicing in the last books as being an 
extremely difficult task for the movie makers if they want it
to be convincing. 

I do think Aging Potion would work for the trip to Gordic's
Hollow, but I don't see it working for the other occasions.

Just curious what others think.

Steve/bboyminn