It needs a few tweaks, but over all the system is still fine, it just may "feel" a bit "outdated". But, the numbers are still legit and are often the source of envy with other classes. What I would like to see, with not just runeforges but all enchants is an option to "turn off/on" the particle effects, as well as an updated effect of our current forges, many of our DK runes simply lack any "bang" to them, they're rather mellow and still stick back in WotLK.

Just a cosmetic makeover will do fine, I'm sure. And who knows, maybe add a new runeforge to help "spice" it up a little.