What if your Karma was Currency?

Just a quick thought... What if you were able to use your Karma to give multiple upvotes, instead of just one? If people agree (by also upvoting that post), you can earn additional Currency. If you assigned multiple upvotes where others downvote, you lose your currency.

In my head, it creates an interesting environment where the people that frequently "invest" their Currency correctly will earn an abundance. But that's fine if they're actually good at picking what I want to read.