Voting for posts in the sandbox

When I scraped together my fifty dollars and earned an invite, my desire to spend it was boring, in connection with which I began to read the sandbox. A post worthy (in my opinion) invites almost immediately, where he left.

And to look in the sandbox (especially on weekends, when the replenishment of articles is the lowest) did not stop. And just as often there is a desire to help the appearance of an invite in a person. And the mechanism is just to give an invite.

How about being able to vote for posts in the sandbox?
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Pros: give information to others who wish to spend an invite on what to pay attention to, give information to UFOs, votes for a post in the sandbox can be immediately converted into karma upon receipt, or simply into votes for the post.

I do not see any minuses, since the automatic accumulation of votes into an invite is not supposed.