To encourage ArenaNet to make a native Mac client for Guild Wars 2. Show them how many Mac gamers they would make happy!
Dear ArenaNet, Inc.,
The popularity of Macs is ever increasing and as the saying goes: Once you go Mac, you never go back. There are many thousands of Mac gamers who want a native client for Guild Wars 2, rather than having to use Boot Camp, Wine or other such programs. It would also be in your best interest to introduce a native client and support for Mac users, as your product would then be attractive to many more gamers.