The process of generating a world does take some time. Depending on the performance of your machine and the complexity+size of the world this will take anything from 5 minutes (per world) up. And yes, if you have an older machine it can take an hour+.
We could package a prebuilt universe with the installer. Estimated additional size would be about 2GB.
So it’s a balance:
- Generate a new unique universe for you. Smaller installer. Will lose some players during the generation process.
- Download a universe. Larger installer.
IMO it’s preferable that everyone has a unique universe. But obviously any time spent generating a world will lose some players.