For the moment 7 days period is more then better and i am saying this because we are in a stage when we want mass adoption.
It is easier for the moment to that with a time frame of 7 days regarding the rewards... again we are talking about mass adoption.
After we will have at least 1 Million active accounts ( yeap i mention active) we can think about it... of course this will have to involve the development team and the witnesses and so on!
Now as you know the SMT's are around the corner and one of them is about projects that involve a greener planet... i am keeping an eye on it as i like the project and i want to delegate some steem power to the project.
Have a great evening all and always Steem On!