This is sort of a rant, but more tradeskill oriented than general, hence why it's here.
I powerleveled my engineering on my new priest, who is now 24, while waiting for my friends to catch up to me in levels so we can run instances. Now, prices on my server are a lot higher than the last time I leveled engineering (pre-TBC), so I was surprised to find myself paying 4 gold per jade and 2.5g per citrine, etc. Iron would go from 4g a stack (which was a steal!) to the more common 10g a stack.
Anyway, my plan was to level my engineering up to 215 to make the Gnomish Goggles. I checked Allakhazam's engineering page on it, and saw it didn't require any gnomish training, which was great, because I planned on going Goblin this time around. So I got to 210, made the prerequisite fire goggles (+17 FR), then burned 10 gold getting the next 4 levels (making mithril bullets... ugh... mithril is very pricy). Then I looked around for the recipe for the Gnomish Goggles. Went to the trainer (who is, coincidentally, the gnomish trainer), and guess what?
The trainer won't teach you any recipes until 30.
Sigh...
So I looked around for my level, seeing what fun stuff I could make. I settled on the Gnomish Cloaking Device, which although useless due to various details, is at least a trinket in a slow that would remain empty until my mid-30s. I also wanted to make a Mechanical Dragonling, but it requires level 30. Doh! The Gnomish Net-o-Matic Project is unfortunately also taught by the gnomish engineering trainer, and thus requires level 30. Gnomish Rocket Boots? Same problem; need to be 30.
It's just a little disheartening that all these fun items, which I have the skill to use (and all of them have drawbacks), I can't use until I get more levels... even though they aren't technically level specific. Sure, other crafts require levels on their items as well, but part of the fun of engineering is that inherent risk: you can use the stuff early on for fun effects... but some of the time it doesn't go how you want.
At least once I hit 30 I'll have a ton of stuff waiting for me, huh? :-P
/rant off.