REASON #2: IMMATURE TEAM MEMBERS

Someone once said that character can be defined by following through on your decisions once the emotion of making them has passed. We've all committed to things we've then given up on - no one's perfect. But completing a mod will need to see a good few members on your development team who are of a maturity that will not give up after a few weeks or months. I suspect that most mods that languish and pull through do so becuase they have more mature members in their make-up. It is not entirely bound to age of course, though by and large the older members will be more mature in this regard.
I knew I should of excepted that pentioner to do skins...