The No Import Taxes bonus can deal with unrest. Every month unrest improves by 1 step. Every week, Loyalty increases by 1 and Economy by 5, with every 20 points of Economy above 200 giving +1 BP per week, up to +10 BP.

Hey How do you assign new advisors?

I think I found a way to improve unrest. If you rank up the warden, according to the game, it will improve unrest.

Not sure if someone mentioned this but Custom Created Chars can now be used. This will allow you to create characters to specifically fill any of these roles that you wish by front loading their stats. Have not tested in depth if they will be better or worse but figured I would put this out there. They do start with a -4 to the stat due to being mercs

So there are some events where thieves rob from your treasury. If you get robbed and still have positive BP afterwards your kingdom unrest will >improve<.

@CHAO$$$ is absolutely correct. A negative total BP (or negative weekly BP) will cause your Unrest modifier to drop. If you want to see why it has dropped, simply hover over the Unrest status on the map screen. You will be able to see several recent messages that will tell you why it changed. (e.g. "Reason: Negative current BP or BP per week")

One of the things that causes unrest is if your kingdom drops into negative BP.
This can be caused when You have low BP and a throne room event results in you spending BP. This will immediately increase unrest.

If Jubilost doesn't get his wagon out of the river, and just stands in the water telling you to "come back later", how do you then get him to join up?

I need that Economy advisor badly.

I also agree with Nokturnal, a little bit of save scumming will help you greatly, but the more you can rank up your advisors the easier the random dice roles get. Also aside from the treasurer all your other advisors are unlocked by having a certain current advisor reach level 3, the treasurer is "available" from the start but you need to trigger troll trouble to get a suitable candidate.

For example if your general seems to be a little bit overworked, level him up to III and the warden role will be unlocked, this in turn will give you another military type advisor to use to gain more kingdom stat points. Once the process gets rolling you will have many of your stats over 100 in no time. The Kingdom Unrest level seems to be based on the average of ALL your kingdom stats so unlocking these extra roles is crucial to keep the kingdom improving fast enough to avoid falling into the worried state and getting a penelty to resolving issues.

You can actually get serene very early and never seem to drop, I got mine a few weeks after the first bald hilltop fight. I don't know if the patch made it easier to get but I didn't think I did anything particulary special to get it that early.
I am playing with kingdom management on normal so I guess it is just based on trying to get max utility from building synegies.