I want the server to be actually playable.
Too many admin wanna'bes think that running a server is basically the same as slapping a whole bunch of plugins together, apply some minimalistic changes and then you have a server. I've grown seemingly tired of servers where you log on and you get bombarded with constant spam in the chat screen. "Visit this shop", "vote for the server!", "we have a website!", "visit the other shop", "have you done the tutorial yet?", "please donate to the server", "did I ever tell you about this block that couldn't be mined? it was so bad that I had to call in help from Mojang to restore this level in order to repair the spawn which they did and now everything works so that you can enjoy our new spawn whenever you like so please use /spawn to check it out!", "have you donated to the server yet??/".
And this of course repeats the whole time, never ever stopping. A little peace and quiet please?
Most admins totally ignore a very important rule: what's good for them doesn't have to be good for the players. And flood players with too much traffic in chat and many will simply start to ignore the whole thing because it gets tedious and annoying over time.