@dankerbug We're switching off between two 5E campaigns right now. Current campaign is a sandbox based around the city of Caford and it's regional environs. The city is on a major trade route, but suffers from ineffectual leadership and infighting between the nobles and landed gentry, and thus needs our PCs to save it from various external and internal threats. We are the heroes Caford needs...
Characters for that game are currently 9th level.
The other has a more linear narrative, w/ a nautical/pirate theme. Set in Sasserine, the last city at the edge of the world before the endless jungle, the PCs run around saving the people/the city/the world while scheming against other power groups. We should be getting back to that one soon, to begin a new arc (extra convenient for adding characters), and the PCs have just reached 5th level, w/ the intent of eventually reaching level 20.
The set up for both campaigns makes it easy to introduce new PCs by design, so joining is no hassle.
Standard AL rules: array or point buy, PHB +1.