That is your subjective opinion.
Dollars are not imaginary, the only thing that is imaginary and non-fungible is bitcoin ,especially when left on an exchange, so yes, you are 100% wrong when implying that suddenly we should fix the market price of goxbtc to be 5x the price of the lost usd. Very very very wrong. And very greedy.
Once you have sent a dollar to Mtgox is not a dollar anymore: it is a gox dollar.
In the same way, when you send a bitcoin to mtgox, it is not a bitcoin anymore: it is a gox bitcoin.
You can off course discuss about the value: 1 gox dollar is 1 dollar? I don't think so.
1 gox btc is 1 btc. I don't think so as well. How many gox dollars is 1 gox btc worth? I don't know.
Even if mtgox has more dollar assets than bitcoin assets, that does not mean it has to pay only customers with a usd balance. It has to pay its creditors, following what the law says...
Best regards,
ilpirata79