i had a 10 rogue, i took to 13 for more survivability due to gear after leg armor/libram nerfs, but when i lost sprint (changed to level-16), the rogue was trash even though i gained shadowstep., so i went 19
losing sprint and SS come MOP will be even worse
rogues are losing 3 vanilla WOW abilites BS/sprint/gouge along with old level 40+ talent shadowstep while other classes will still have have abilities that where 40-60 level in van-WOW and thru all the expansions