Why shouldn't monks be able to tank raid mobs? Monks are tanks, that is what they are supposed to do. The Monk progression is FIGHTER>Brawler>Monk, the key step being fighter. Just like furies go Priest>Druid>Fury, it's not like we started off as mages and then got some heals when we turned 20,
I chose fury based on the idea that priests were good at two things, healing and buffing. I thought that offensive buffs would be more useful for my guild at the high end. The spell listings I was using to make up my mind did not include hard numbers, merely vague concepts like increases dps or instantly heals a large amount of health.
I don't think I really care how the devs go about fixing furies as long as they don't turn us into some half-[Removed for Content] hybrid that can't do anything well enough to be worth taking on a raid.