I'm in the same boat. Though Jess's homecoming is more for...revenge, of sorts, and less a desire to actually visit Ishgard, lol
For Martiallais, same deal.
With Zarek, it's probably going to be one part testing himself and one part that the Free Company he works with is moving to aid Ishgard now that the gates are open. Ishgard will be a nice new land to wander around and find nice spots to relax in, aside from the whole war with dravanians thing.