Did you know that? (Dominions trivia)

[ano]

2) Does "net +2" mean "+2 compared to enemy dominion"?

One more point (very important one):
6) it makes scales work as intended: magic gives more research, luck increases the chance of good events etc. In hostile/neutral dominion positive scales effects (at least some of them) don't work

As for unrest: yes, enemy dominion causes unrest but that unrest doesn't increase with time (it is what I observed in my games). So if you have 3 unrest caused by enemy dominion, it won't increase the next turn. This means (important!!) that there's no sense to allow auto-lowering taxes for such provinces. If you keep taxes at 100 you won't get additional unrest, if you lower them to 90, you won't get rid of those 3 unrest points. So it is worth manually setting taxes to 100 for such provinces. Watch your money