The BoP JC epic gems are great. The comparison to enchanter ring enchants isn't really fair, because it's ignoring an important factor: those ring enchants are expensive. Spell damage to ring, 8 lps 8 gpe... on my server that is some 200g per ring.
The JC BoP epics are just a FREE bonus, because they use the same regular raw gem as the non-epic cuts.
In fact, for a new JC they are cheaper and easier to get than the regular blue cuts, because you just need to rep grind to learn them, while the good blue recipes cost 500+g on the auction house on most servers.
JC is a pretty good profession. While enchanting can get a bigger benefit with the ring enchants, the JC bonus is cheaper and easier to get. Besides, there is nothing preventing you from taking both, that is what I did with my new paladin.
The only thing I think jewelcrafting needs is some updated trinkets, the blue trinkets are amazing when you first hit 70 but are replaced easily by endgame raid drops, it would be nice to see some epic craftable trinkets with primal nethers required, and some really amazing trinkets with nether vortex required.
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