I tried out your server today and I really liked it. It was easy to connect to and I like how you gave beginner players wood, steak, and a stone sword. However, I think this server could be improved from a gameplay standpoint and I'll just give a few of my suggestions some of which you may have already heard. First, spawn is a pain due to everyone spawning on the same block and people hitting eachother. This is very annoying especially when you are trying to register or login using the Simple Auth program. A solution to this would make players spawn on multiple blocks and having spawn a no PvP/hit area. Also, PvP is not working, as I realize you already acknowledge, so that would be a great bonus. Finally, for most players furnaces are glitching and not working-although I don't have a solution to that.
Thank you for taking the time to read this and I hope you use it!