Honestly, they need to fix the mechanics of the class to make it more fun and dynamic. (This probably won't happen until next expansion) I play my Feral Druid and I see that I have abilities that have conditional modifiers already placed into them. Ferocious Bite, Ravage.. Why doesn't the Rogue have any of these? They do not need to be over the top, but it would be nice to be compensated a little for Backstab and Ambush basically being gutted. Why don't we have something on Ambush that gives us additional damage if they are over 80% health or something? I would really love to see something added to Rupture to make it a little cooler to use during PvP, since the only reason you'll ever use it as Subtlety is for Sanguinary Vein.
And I do not think all of the changes they have made will go live. I'm fairly certain that extra energy, extra damage from SV and Preparation baseline will be what we get. I'm not even certain that the extra energy will end up being +50...