Returning after 20 years

So Pantheon gave me itch to come back and play something more complete. I have heard New Halnir is the best starting area for new and returning players because it is the newest one and has better starting gear. What would be the equivalent for evil as I really want to play a Shadow Knight.

Also, can I return to the starting island if I leave? Wondering about grabbing a merc early and then going back to finish it.

Thanks in advance!