This is great, thanks! I am able to use per-warp permissions by giving nodes like essentialsnk.warp.island to perm groups. Something peculiar about the setwarp process is that warps often revert and go to the coordinates in the same world, not remembering correct world to warp to.
You are able to edit the messages by opening the jar and changes the .ini file. This isn't optimal so I may fix it in the future.