The general idea and concept behind this are amazing. In my opinion, this should (and could) be way more popular then it currently is, especially when it comes to smaller servers.
I am uncapable of downloading the file, simply since I don't have the time to spend and play minecraft. However, what I can judge is the thread/post:
- Great concept
- More popularity possible simply by posting on websites other then Planetminecraft as well
- Thread layout
When it comes to the layout, I recommend changing it to a more appealing look. The Spoilers are fine, but instead of using all kind of different font sized, heights, bolds, and whatnot, try to limit it to a bare minimum.
- Question: Does a player need to play on the downloaded world, or can he/she use it for several worlds? A server can use Multiverse, but it would take away the fact this is ment to be vanilla (and for Multiverse you need either Spigot or Bukkit). A smart way of solving could be adding a schematic, which people can paste into their existing worlds.
Hope this helped you a little. Cheers