Attracting players shouldn't be the main concern, instead, you should focus more on how you're going to keep them on the server in question and that depends on how simple the whole process is going to be for them.

I'm not a Minecraft player but I've heard about a somewhat similar server before ^{["link" - make sure to check the other links within that article as well]} and I think Minecraft players would probably enjoy having another option in regards to such a server.