As much as I love them for adding new features and languages, what I really want is Travis CI Pro with non-public projects. So I can start giving them money and use it for work instead of using it for pet projects.
Under the future plans heading, private build support is first on the list.
We are working actively on this right now, and should have some updates in the next couple of weeks.
If you can bear with us I am sure you won't be disappointed :)
Josh