it doesn't hurt to send them a letter or drop a voicemail at this point. if Hunt is wrong (which he rarely is, I can only think of once) then all these calls and emails will simply be reinforcement that going anamorphic was the right decision.
but if Hunt is RIGHT, then this is the window to get that changed. It's a pretty small window. Sitting and waiting just means the window is closed and our opportunity to seriously alter the outcome has passed by.
I'm not saying they need to mail Lucasfilm flaming bags of dogshit. But a letter or a call to the offices stating that putting this thing out non-anamorphic is not a good decision isn't going to hurt.