I don't understand why you want (or need) more than one vote. As @Lego Stormtrooper stated, you can always raise awareness (significantly) by offering a bounty on a question you like.
If you think a question especially worthy, I've seen someone in chat (I don't go often, so I don't know how common this is) ask others to look at a good question and vote.
Rep is garnered with a number of great questions/answers, a host of good Q/A, or a flood of mediocre Q/A. The one-vote-per-person seems to be working well enough. If everyone had two votes per question, wouldn't they use them, especially to promote a question they've answered (and often elevating a fluff question)? In the end, it would all come back to everybody being equal, with two votes instead of one. And high rep would mean less than it does now.