Pet bags change nothing for gold farming. Haven farming is literally better than anything on Myrland. SV would have to add something stupendously lucrative to Myrland to offset the difference. And once they do that those spawns would be overrun by players killing each other, putting Haven in the lead again.
I'd agree with the general sentiment. Haven is once again, WAY too large, and has way too much stuff.
Bandits, razorbacks, bears, three different types of wood, none of these things belong in Haven.
Make a town with a walker spawn , tutor NPCs, no bank, firmwood (because it's such a "meh" middle of the road wood for damn near everything), granum, dogs and donkeys. Make it so you can catch minnows or some crap when fishing makes it in. Heck even make the walker heads sell for 50% what they do on the mainland. They should be there to learn the basic systems and move on. Not farm up a weeks worth of gold and resources.
However, I also disagree with the idea that Haven is the best way to make gold. Even just straight gold farming, bandit spawns yield gold faster if there are veteran bandits in them. And there is a lot more opportunity to make gold in player-to-player trades on the mainland if you go after the more rare/valuable things you can't even find in Haven.
What Haven IS good for right now is farming up certain resources that aren't easily available in towns you intend to visit and then withdrawing them in those towns with zero transportation time and risk. And that's why I say banks need to disappear from Haven. With no mounts, and no banks, it becomes very difficult to abuse Haven to any degree with a major impact on the overall game.