Mara/Sents are running Anni/Watchman spec, this spec is being nerfed slightly. Their focus tree, currently useless, is being buffed somewhat to make it viable. People need to understand this clear cut difference.
Sins/Shadows that hit for those numbers ARE in fact tank spec, they definately need to be brought back down to earth, they have something for everything and then some.
Jugg/Guards are not OP at all, anyone who thinks they are needs to L2P.
Snipers/Slingers are both great classes if played well, not many are.
Scoudrels/Ops are average DPS/gankers, respec for heals or reroll.
The rest are true to what you've described, I certainly agree on making people use tank capstones to enable guard.