Patch 5.2 only came out three weeks ago, and there's already talk about what's coming in the next patch. While the new PvP gear changes are interesting, we still have to deal with what the last patch dealt us. Rogues typically receive fewer changes than the other classes, for better or worse. When we have a patch like 5.2 that introduces several updates and new additions, there's naturally a period of coping with the changes.
Marked for Death is an amazing talent for chewing through mobs, if you remember to use it. I tend to use it to dispatch a few enemies while doing dailies, forget about it for 5 minutes, and then I remember it, and wonder how I forgot in the first place. With the Glyph of Deadly Momentum, I feel that rogues are the most efficient solo class in the game. We can keep Slice and Dice up permanently, and with Rupture applied immediately, we're dealing full damage right off the bat.