When I started working on my own roleplaying game, my main intent was to avoid switching systems whenever I wanted to play a different genre. And I wanted to keep it simple because maybe I could play it with my kids. Within these broad guidelines, I picked whatever I liked, improved what I thought needed improvement and filled the gaps with a lot of ideas that seemed convincing at the time. I did put together some playable versions. We had fun playing them and some players even used it for their own games, but it never really convinced me. After years and years of writing, playtesting, re-writing, I finally understood what I did wrong. I created what I liked at the moment, but didn't follow a clear purpose.