Kapcon needs more games. Kapcon has been a staple of the Wellington, and the New Zealand convention gaming scene for a fair while now, and seems to grow larger with each passing year. It is a great time (you can read about my own experiences at Kapcon in recent years here). There are many games on offer, and it is a very supportive environment environment to run a game.
So, why should you run a convention game? The simple answer is that it's a whole lot of fun. The feeling of having people really engage with their characters, dive into the setting or plot, and bond together over the course of a few hours is amazing. A convention scenario is one of the purest aspects of roleplaying, a simple story told in half a dozen discrete scenes - and it's a great way to try a new system or published scenario.
That's not to say it always goes smoothly, but the players at Kapcon are usually very supportive, and you can learn a lot from what doesn't work in a 'con game to improve your next effort.
To me, running a game at a roleplaying convention is something that everyone should try at least once, so, if you're planning on coming to Kapcon, why not offer to run a game?