New members can do it anyway, but if you "suggest it" when they register, it's more easy to do it.
That's because it's not the same to told someone "you can post to earn nullcash", to tell "You can create a thread on presentation and you'll gain xx nullcash".
SimCity are a great game... on Maxis times. Now is only a ruined franchise (Thanks EA for Simcity 2013).
I do not wait to see another version, at least, until Maxis returns from their own ashes and EA are totally dead.
I leave here a screenshot of my custom created ISO image.
Probably you can delete more files, but I think that's not a problem. These iso are only 10Mb on disk.
Obviously, the ISO are created with the contents of the first DVD of the game. I have the physical edition.