There is a bunch of ‘daily’ missions near the forge area in Moria where you can do repeated instances for reputation stuff. Forgotten what that area was called, at 51 you might be a bit low level for it though.
I wonder if my goat came with pre-order, cause I can not recall a quest-line for it. Suppose you could buy one from the Turbine store? :-)
Haven’t tried tanking on my guardian either, he’s my lowest level character (and shortest, being a dwarf), but it seemed decent enough on the Warden. Was thinking to level a Beoring due to their ability to tank, heal(?) and dps. — like Druids in wow. So the ultimate solo+group class. Just a shame I’ve invested 11+ years into my Burglar and accomplishments/progress doesn’t track across all characters – if it did, I would swap characters all the time and enjoy more of the game.
But if you do not like tanking, go with the Hunter. That and Captain are probably best solo classes.