I found a pretty handy exploit with engineering. This only works on WHITE STATS THAT YOU CAN REFORGE. This means greens like such and such "of the invoker." Say we're using a piece of "of the invoker" gear, and the stats are 245 int and 160 crit rating. You reforge 70 crit rating into 70 haste rating. The stats are now 245 int, 90 crit rating, and 70 haste rating.
All you have to do now is use a pair of gloves with the engineering "Hyperspeed Accelerators." Check your stat sheet, you will have gained back the 70 crit you reforged, and you also keep the 70 haste rating! This means the stats are now 245 int, 160 crit, and 70 haste. This makes greens as good or even better than heroic 346 gear. Enjoy!
This is not client side, tested it myself.