Unless you're going to try and trademark them all.
The simplicity of the service is an opportunity to attract people without a lot of webdev chops, so why not make it super simple?
For rake/rails apps at least, you just run `heroku run 'command'` and you're done.
Feel free to innovate - you're a startup, and it's what we love about you.
Other than that, this looks great! I'm excited for you guys.
I hope that saves you some time.