I remember last expansion that blizz gave rogues a legendary to help boost numbers on that class, now I'm not saying give us a legendary but some tweeks to the class or even a buff to either dps or survivability or I pray a tank spec would be nice.
Looking at the numbers here we are the 2nd lowest played class in the game atm only class lower is monks and thats since they are so new. and as you can see since monks are so new they get buffs yet we still sit at the mediocre mark.
http://wow.realmpop.com/us.html
this is not a see all end all 100% accurate numbers but are the closest tool we have atm.