Do NOT make the same mistake as FFXI.

[Winterclaw]

You lost a bit of it when Square listened to the people that wanted set duties for each class like in FFXI.

Or rather, you are for now. People want CON to be the healer class because there is currently no better alternative. When the White Mage Job comes out, people will want them to be the healers and CON will theoretically have more freedom to do as they please. We'll see how it works out.

That's one thing I really like about GW... you've got a measure of class flexibility. If you want your "nuker" class to nuke, you can (kinda pointless though as they aren't the DD in that game). You want him to be a support char, you can. You want him to be a healer, you can (and last I heard they were pretty good at the role).