I've only used Union once, in a one-off epic game I ran (the only time I've used the epic book, actually...). The only way I was able to make it work for me was to play up the boring aspects of it. It's MEANT to be boring, because the epic folks of the multiverse are tired of having exciting, world-shattering things happen to them ALL THE TIME. After making a heroic one-man stand against an entire Orcish horde for the THIRD time, the epic fighter wants to go somewhere where his actions have meaning; he longs for the simple life and minimal responsibility of a City Guardsman. That's why they founded Union in the first place.
Basically, the PCs show up and are trying to track down a cross-planar smuggler, and essentially the entire population of Union is trying to get rid of them, because they're causing a fuss...
It was a very tongue-in-cheek take on Epic play, and it only went over kinda' well. But I just couldn't justify Union in my head any other way.
(in hindsight, after reading some of the posts on this thread, lowering the levels of most of the NPCs in Union does make it work, too. I was stuck on trying to conceptualize a place filled with Epic commoners...)
Basically, the PCs show up and are trying to track down a cross-planar smuggler, and essentially the entire population of Union is trying to get rid of them, because they're causing a fuss...
It was a very tongue-in-cheek take on Epic play, and it only went over kinda' well. But I just couldn't justify Union in my head any other way.
(in hindsight, after reading some of the posts on this thread, lowering the levels of most of the NPCs in Union does make it work, too. I was stuck on trying to conceptualize a place filled with Epic commoners...)