Another themed server, sounds intresting and has only been done once before that i know of with 300 server.
I hope this time you are commited to doing what you say though because otherwise you know you will get dissed :P
I think with high servers what i've learned is the most successful way of doing it is just make everything easy.
1) People dont want rare items as in once a week drops or heaven forbid like official a once a year. They want to hunt a place for 2 hours and get the full set.
2) A level a day is no where near enough, minimum of i'd say 100 is what people find fun.
3) Rebirths, 1 really hard rebirth is not enough. First rebirth should be obtained within an hour of playing and 3 more throughout the day.
Hope this has helped you understand the mechanics of the average p server player and yes it is ruining the dev community but hey its what the players want :P