What stands out in A continent shaped like the Americas
The broad silhouette is the reason to save this world. Coastlines, narrow land bridges, gulfs, and separated islands create the familiar impression, while individual biomes naturally differ from the real geography.
How I would approach this world
This works well for a themed server, nation-building map, or long coastal exploration world. Players can divide regions by the natural land shape and use ports or a Nether network to connect distant settlements.
Before settling into the world
Use Java 1.18 for the closest historical comparison and inspect the full continent before updating the world. Newer versions can preserve existing terrain while changing newly generated chunks and structure locations.