1) respeccing for a dagger + shield makes sense if you have powerful procs and -100 to an appropriate enemy resists. Otherwise you lose A LOT of damage without a scythe (daggers benefit from dexterity, not strength!).
2) forget about Razor Fur Titans (thorn aura). use Angel of Death to jump your way to the Nihlathak. Beware Fiery Rings of shamans there!
3) Boring indeed, but he's both an effective Dunc/Fauzt/Truine farmer and excellent in getting charms.
4) your gear is very fine. Maybe you should try to farm Terror Worldstone Keep with increased playersx value for set gear. Getting Rathma's set armor is difficult though, but getting the set scythe will help you a lot with its awesome Guard Tower proc.
Good luck!

P.S.: heh, man, you said you were playing on realm? Just trade for this set ancient armor and you'll fell in love with full Rathma set for sure.
