I was wondering what there was going to be to do for existing players in Jewel of the North if it was all focused on revamping the way levelling works. The answer is: not much. As mentioned in my previous post, if you never completed the levelling zones that remain in the game, now is a good time to go back and do them. Even if you already did them, there are a couple of new tutorial quests that you'll have to go through to earn the new rewards, but that's it.
That said, I reckon this is a great time to give the game another shot if you haven't played in a while. Just do whatever new quests Sergeant Knox has for you and the rewards will start rolling in in no time. The new catch-up gear will bring you close to on par with what used to be top level gear only a module or two ago. It's kind of impressive how far the game has come in terms of generosity there, because I still remember how stingy it used to be with simple quality-of-life things like mounts and bags. Now you have a blue quality mount and companion before hitting level ten and get a 42-slot bag just for completing Vellosk.