From http://dev.bukkit.org/bukkit-plugins/fun-hard-mode/#c1462
- Sponge is not ready
- I've heard it does a lot of stuff in the data API which (can?) cause performance issues (via Aikar)
- SpongeVanilla is on the backburner (I do not want to use Forge nor want the overhead of SpongeForge).
Performance is key for me, and if Sponge is obsessed with API API API and is willing to take performance hits just to grab some extra data, then I'm not going to move until that priority is remedied (perhaps in a fork, similar to how Spigot/Paper started out?)