I did two or three years ago. The simulation was lacking and it got used up fast. I posted a long bunch of suggestions on the developer's forum. Maybe Kudos 3 will be more dynamic, but probably not since most people pirate games.
@previous (B)
Yes, it has its flaws. It has a lot of potential, though. Imagine if you were able to interact with people's characters online - that would be cool.
All in all, though, I like it. Repetitive gameplay and all, it is fun to build up your skills and such.