You only need to be 225+ in the crafting profession to get a quest for Wyrmbane and Zarephs, you get Council of Labors lower (my 22 Rogue already gets them for Apoth at 203). And yes, you get +100 Faction rep for where you turn it in.
Don't forget that reg 5man's also give rep for each Faction, just not as much as Expert.
There is at least 1 level 50 daily in Fortune's Shore in SS and iirc 1/2 at that little outpost in Firesand Desert. Plus there is the weekly raid in SS and SM.
One more place is inside the College of Planar Studies, the guy all the way at the back gives group/raid daylies.
For pure rep gains, there is one daily in pretty much every zone from Stonefield and up to kill Planar creatures.
DPS: (Inq) 51 (Sent) 10 (Ward) 5
Raid Healer: (Puri) 32 (Sent) 34 (Ward) 0
MT Healer: (Puri) 51 (Sent) 15 (Ward) 0
Tank: (Just) 47 (Sham) 7 (Inq) 12
Inquisicar: (Inq) 51 (Justi) 14 (Sent) 1