The value of MtGox was not the service, the value lies in the huge network of International Bitcoin traders (100k + people) that used the service.
What if...
1) A reputable company with loads of cash purchased the now defunct MtGox?
2) The company injected enough FIAT and BTC to make good on all MtGox customer accounts?
3) The company renamed the site, build an improved platform, and sent an email to the 100k + people inviting them to withdraw their FIAT or BTC funds at anytime?
4) What if the company also offered the 100k+ people to make their first ten trades for free?
5) What if the company extended the same 10 free trades offer to its already existing customer base of 10,000,000+ small, medium, and large businesses, so that they too could begin using Bitcoin?
6) What if that trading network was no longer called "MtGox" and Mark and Gonzague were no longer involved because they accepted 50,000 BTC each for walking away?
7) What if in the days that followed the announcement Bitcoin started trading for for $50,000 USD each on this network?
What if that company was called Google, or VISA, or PayPal?
Now would you use it?
I will say it again. Half a billion US dollars is a drop in the bucket when compared to the :)USD $15 Trillion a year worldwide transactions market.
http://www.forbes.com/sites/stevenbertoni/2014/02/12/can-paypal-beat-apple-google-amazon-and-icahn-in-the-wallet-wars/Freedom is contagious. If the truth comes out and people are made good, Bitcoin has this capacity. Anything less and it is yet another compromised system. Would be best if this growth were organic, but I just don't think that is realistic. Most likely someone is going to make a major investment to take Bitcoin to the next level. It's just a matter of when...