Are there any more quests for the campaign after i've gone to every pack and done all the quests that end in the wolf with the gems at the end if that makes sense? Also does Mistvale not have any quests?

Those are the only quests in the story line currently available. However when you level up certain professions, some new scenarios become available in each pack. For example, In Murkwood second sword campaign, once you reach mining level 35 (I believe it's 35), the Rockbreaker Ox scenario becomes available.

At present there are no quests for Mistvale.

There are seasonal events though. In January there was a month long event for Icerun that featured special apparel and companions. As I understand it there is another event coming up in April for Murkwood.

No, after you meet Korvo four times there are not(yet) any more quests. But you can get into Wild Wolf hunting(something I have little patience for but could make you lots of moonstones), make sure you have enough space in your den for at least one more wolf.

@FlameWing As referred to in my earlier post, there are currently no more quests after that level. Last I knew the Development Team is working on the next level but we do not know when it will become available. They are also developing a new wolf breed. After you finish the quest line in one territory, you are free to go to each of the other territories and do the first level quest line there as well.

After that, everyone develops different goals, many of them are long term goals. Some like to hunt for wild wolves like Silvershadow mentioned. Some focus on breeding certain color patterns. Some develop lore for their wolves that they can add to their individual wolf profiles. Some try to collect moonstones to purchase apparel from the Custom Apparel shop to deck out their wolves for the pageant. Some are pursuing the achievement badges. Etc.

This is a relatively young game. The Developers keep adding things so you may sometimes see things pop up in the mole market that don't yet seem to have a purpose but they will in future updates. There is a lot to do outside of the story quests. Just explore it and have fun.