I see your point about Amy mirroring the Doctor and it's true that the sonic probe was a clue about that, and there was an obvious parallel going on, but at the end of the day I keep seeing Rory as The Doctor's counterpoint, more than Amy, and I focused on Rory in my own review.

can now absolutely see the possibility for Amy being the person in the space suit

Funny you said that because I totally can see Rory in the space suit now!

http://frenchani.livejournal.com/498991.html