Team professions

[luxlunae]

Any team that is a consideration for heroics has one toon with Enchanting.
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this.

Tailoring on your tank (counter intuitive from a benefit perspective, but it means that you can loot tons of extra cloth in northrend and cata without having to switch off your tank) and enchanting on another toon. I have alchemy on all but one of my 85 team.

Because I wanted something cheap and fast I did herbalism on two toons (+80 average haste with a little heal), then blacksmithing on my healer (you only need to get partway through wrath level bsing to get the wrist and glove sockets, not all the way to cata) and now I'm working on JC on one of my mages to have a second set of dailies and get the gem patterns I want faster once epic gems hit.

PS. Alchemy is cheap and you may want to try to keep it at the same level for your team so that you'll actually use the low level elixers rather than junking them!

additionally: Alchemy gives you a 359 trinket, a daily transmute worth 100+ gold (I do volatile life to airs, 4-19g x 15) and double length flasks (and a permanent half flask, if you're feeling cheap). All for 2-4k gold. No other profession comes anywhere near the price or the benefits.