Most of us who have been around for a while will know why this sort of thing wont work, so there is no need to spoil the fun of the person instigating this by harping on about it.

A petition though, for a specific toy or concept, would be more effective on the global fansites, as Australia and our fan numbers, would be considered so insignificant to Hasbro, that no one there above the person reading the mail would ever know about it.
If you want to improve your chances of being noticed by Hasbro, try tfw2005 or seibertron.

If the fans there support the idea enough to make it a news item or a popular talking point in the American fandom, then you might have someone important at Hasbro finding out about it.

For here though, have a bit of fun with your dream, and see if anyone here is supportive of the idea of another, more Gen1-accurate Galvatron toy.

I just don't think it is necessary to have more people picking on how and why it could/should/would fail.... or going to the trouble of saying that they won't support it. If you won't sign, there is no need to say so.
Let him enjoy his project.