TL;DR: Question in the next post.
So here I am... with 10-level player characters.
Time to step up my game, but I am not sure how I will do it.
With lower level characters, it was somewhat easier for me to picture out a challenge. We had them all: the list is too long to make it.
Moreover, we had all sorts of political drama: prevent wars, work their way through sieges, kidnapped by a military leader who wanted to use their powers, etc.
So far, however, most of my world has been a low-level world. There are indeed some powerful individuals, but they do not meddle with the player characters (too much).
In the way I developed the World of Greyhawk most of the monarchs and leaders hardly go past level10.
So far, the players have met a couple of dudes who are 12+. One of them is famous -- and rightfully so.
However, now it is THE players who are getting quite famous and attracting unwanted attentions.
With one group of player, it is easier: they prefer diplomacy and politics. They try to avoid fights. For me, their campaign is very easy to conceive. At the moment, they have been tasked with the duty to organize security measures to host a VIP in Niole Dra -- unknowingly, they will end up clashing with some of their relatives and, in the finale of this small sandbox chapter, the real victim will be somebody they were trying to deter.
Now, if the above plot is very *easy* for me... the following one is not.
Another group of players (same setting, same in-game year, different campaign) are roaming through the wilderness.
1. They have met again after a while (long pause off game);
2. They do not share common interests (Wizard vs. Barbarian vs. Ranger)
3. Currently, they are fleeing from the same thing (a warband of Wood Elves who destroyed the camp of the wizard's followers because they thought it was a Iuz outpost -- and rightfully so, considering the mess those Orcs were doing).