As said above, should they? I know this may have been discussed before, but with the new race changes coming up, no time like the present. I was thinking something along these lines for the profession/race combos:
Alchemy- Goblin
Enchanting- Blood Elves
Engineering- Gnomes
Herablism- Tauren
Inscription- Undead
Jewelcrafting- Draenei
Mining- Humans
Skinning- Worgen
Leatherworking- Trolls
Tailoring- Night elves
they could even be more than just the simple +15 skill, it could be increased gathering speeds, faster crafting times, etc.
edit: forgot new races. No more mining for dwarves, they get + archaeology