Project

Open World. (In other words, how minecraft should be)

I hate creative worlds with plots, plugins with basic minecraft restrictions, overused spawns, excessive server announcing advertisement. You should be able to have good relations with the server owner.

One with a caring community. Not just a bunch of "Welcomes!" and then no replies to your questions.

Thanks for that.

Something new. Something interesting. There are so many servers that are clones of eachother...
I don't actually play much anymore, but if I were, I'd be looking for a place with 'adventure' areas around their map/main map. Little dungeons with things to do in them and whatnot.
Or, one that uses the Mob Arena plugin's more crazy segments.
Basically, a server where you can tell that the owners, managers, devs and staff actually try to be unique and interesting rather than a cookie-cutter piling plugins that everyone has on top of eachother and leaving it alone.
An involved team.