[Messianic]

LoIO is fine through 30. I did 22-30 in a single day there (I think it was like 10 hours or something...). I wasn't that twinked. No FBSS or anything like that - I may have had two KD's, I can't remember exactly.

The giant fort in WW is comparable - despite their size, the greenwoods there hit basically the same as the Iksar Pariahs in the north/west portions of LoIO. The advantage there is those giants are static and you won't get wanderers once you figure out the few roamers.

HK (High Keep) might also be comparable, given there are a number of level 20-24ish guards that are easy enough to solo, always drop a 5pp sword (and you can flop-sneak to bank/sell if you're smooth).