Kyronix, please don't take offense as I'm going to be rather blunt.
We don't want event-level mobs. We don't want Covetous L4 mobs. We don't want uber mobs of any kind. "Challenge" is completely relative. A lot of people want to do these missions on a crafter, not a tank. Remember er, this is an RP system - don't alienate your core audience. Take an existing mob and double its HP, bump its resists *a bit,* bump its combat skills *a little.* Don't go overboard.
The rewards... Will delivering to Slim give gold for your city (after the current gold bug is fixed)? If not, this system will be a failure since the potential rewards for going to Slim far outweigh those for doing it "properly." The crafting rewards are a joke as they are as well. 50 spined leather? Dragon scales? Try adding a zero, then it might be worthwhile. People would be elated to receive 500 bloodwood or frostwood. 50 would be a good amount for imbuing resources though. I'd also suggest good versions of Slim's rewards, something like a "a beautiful scene of Britain" painting - city name either random, or based on your destination.
Delivering to Slim should definitely give karma loss, loyalty loss or both.
Delivery gold could use a bump. Even at 30k, it would take 67 deliveries a week to fund a trade deal. While the first few weeks will probably see these numbers on a nearly daily basis, numbers will drop precipitously after that as people lose interest.
