I am torn between half of 'em.
As a mage I intended to pick Herbalism and Alchemy from lvl 1 and never change.
Then I realized I would probably want the gear and cool items, so I went crazy and made a schedule lol.
Herbalism and Mining until 60.
Drop Mining for Tailoring (for gear).
When BG come out, drop Mining for Engineering.
At some point, probs high lvl dungeons and MoltenCore, drop Herbalism for Alchemy.
Befor Zulgurub, retake Herbalism for the Bloodvine.
As you can see, this is not really feasible xD
Don't wait for the world to accept you to try and be happy.