I think that you are correct about most the most things you listed but I do miss the most important once, which it to be genuine. If you are genuine and find your nice, you will do ok! If you have more diverse interests but you are genuine you will be ok!
While we all are for some part in it for the money , I do guess it was the final push to register, we need to see the money as a nice side effect.
Interaction sums up the most of your things.
When writing a post, don't post and run. Try to reply (and if possibile) even to give the genuine ones a small push in the back. I know that this is not required but people will be more motivated to come back to see, what you have to say.
Also sharing interesting steemians, is utmost important. It is such a big ocean, that nobody alone can discover the new great whales! That's why I do present each Thursday, 3 of the Steemians I am following to my followers. It is up to them if they want to follow then or not!