From those who are able to play in C1S2, how is the progress of Pantheon looking from C1S1? Are there any more quest givers? Have the starting areas been improved at all? Are you still able to walk on water?
Is Season 2 basically just a new dungeon added and no other real improvements?
I think the best way to answer your questions is to link the updates page.
https://www.pantheonmmo.com/pantheon-production-updates/
You can see the patch notes for each update along the way. At a glance it might look like season 2 is just a new dungeon, but there are a lot of other real improvements that aren't the big "in your face" improvements so someone might not notice them.