It is an interesting concept.
What if the 99% vote in highly random and confusing ways, drowning the "true 1%" in an ocean of similar-but-wrong ballots?
Fortunately, SVD can help a great deal...I even wrote code (for the "Audit Ballots") which greatly simplifies the problem, reducing Ballots to 5 maximally-representative teams. Traders could specify their "team", but I'm not sure how this would actually be coded in practice.
A second, more fundamental problem, is that it seems to reduce (as almost everything does) to "buying VTC"...instead of needing to buy 51%, I can just buy 1%, and then spend all of that remaining money (what would have been spent on the 50%) on transaction fees immediately following the fork. An attacker will strike at the weakest link...so if this is cheaper you have actually decreased security. However, it is possible that this will not be cheaper, and furthermore it is possible that this change will make the 51% route more expensive for the attacker (because it is now 51% + surviving this second hurdle).
It is hard to tell, isn't it? The transaction-fee-differential is really just a proof of work, as well, as one can trivially make trades that are non-representative (buying 1 of each state risks no money, but allows one to pay a transaction / trading fee...hence it just becomes a wealth contest that has nothing to do with "trades"...I proposed this awhile ago but have since abandoned it as being not worth it).
Also, miners can simply censor transactions which they do not like, so your way would allow a 51% miner coalition to buy 1% of all VTC and then control the outcomes (in my way, they can simply veto and force the voting to be redone).
In general, a principled approach will be most robust to attacks, vs a whack-a-mole security patches. For example, in the whitepaper I attempt to explain, why I feel that a second token can represent reputation (a kind of "InTrade stock price"), and why RBCR should happen using SVD. These considerations are based on my real-life experiences with trying to uncover the truth amid a room full of potential liars.
Nonetheless, nice try.