Made it so that a warning is not displayed when a Red Shell is targeting opponents.
Mmmh, I think it was an important information when you where just behind an opponent that seems to be targeted by a red shell.
It's not the most common situation, but now you could simply get a red shell from nowhere.
Lowered the appearance rate of Mirror and 200cc races in Worldwide and Regional settings.
It makes sense for 200cc because some tracks are very hard, but mirror actually adds some variety.