I think it is a great idea. As you state, the key is using it as a tool and one factor to consider. I would also like to see it more visible in other areas. The legacy reputation number has had it's time and due to be replaced with this or similar evolution of it.
I love to support new users to the platform, what I don't like is those that just milk everything out. What they may come to understand over time is that the short term monetary gain is far less than they could earn if they reinvest in the platform by powering up and helping to promote and grow the platform instead of just grabbing their "milk" to go and running off with their short amounts.
I'm not saying that all need to re-invest everything, but it would be nice to see at least a balanced approach. I've stopped voting for many that I consider "milkers" and remove them from my follow.
Voting is a choice and folks are likely to garner more support and votes by supporting the platform in their powerups.