User blog:Rickstar35/Using mail as in-game currency?

When the gathered mail is a part of gameplay, it is only made by collecting passenger trains, flying envelops and packages. Collecting mail will only earn achievements and prices, like for the other source of materials. I just wondering if the gathered mail comes to be useless. What if the mail would be turn to be a valuable currency? I mean using gathered mail a player collected overall to spend it on items from the shop. It's my suggestion to earn something quick and reliable.

Ricky ~