Mod Cooperative

What makes a good application for a mod to create -- as in what questions tell the most about players and what really makes players' applications stand out? I've been thinking about this a lot lately and for me I've found the thing I most look for is a character's motivation and a sense of humor is usually a real seller. What of you guys?

So I thought I'd give a bit of advice on how to make games last. I co-mod two games currently. One has been going seven months, and the other just over two years, so I think I can be a bit of an authority on it. Mind you this comes after a near-detrimental server change, early mod switches, mod additions, players leaving and returning, instances of drama, dealing with poor writers: all the normal things that could threaten a game with death.

So how do I do it? ( Click here to find out! )

So. Now that this is TL;DR, let me sum up:
1. Find a balance between good cop and bad cop, or have one of each.
2. Make sure you and your co-mods set examples as to how the players are expected to be in game.
3. Pimp often, but not excessively.
4. Be prepared to work at it hard, and have co-mod who will help you. The right co-mod will make for an amazing dynamic group.
5. Keep variety in your game, and that will always breathe new life into it.
6. And most importantly, make sure your players are having fun, but make sure YOU are too.

I hope that helps!

EDIT: Practice makes perfect, and we learn from trial and error. What have you guys found that works or doesn't work when modding an RPG?