Steemit suggestion – Upvote more than the maximum 100%?

I seem to upvote a bunch of blogs and comments on Steemit, I am still left with an average 90-95% voting power. What about a "power-upvote" option, that could drain the "voting power bank" a little more. It feels like I am wasting unused voting power. Perhaps I looking at this all wrong?

A power upvote that is worth 2x, 3x, 4x a normal 100% upvote would be a neat option, especially for lower SP users. Voting power drops accordingly.  

I realize I am probably missing some important economic reasoning this would be bad for Steemit.  

Thoughts? 

-Greg