Sell everything, why?
How are you so sure that the trustee has already sold everything in order to pay all creditors, including Karpeles and other MtGox associates?
Nobody can be sure without seeing the books, but that's how the math works. ~800K bitcoins lost = $480M at bankruptcy. ~200k of those bitcoins were "found" by Mt Gox, leaving the BTC insolvency ~ $360M.
The trustee recovered ~ $405 million from selling BTC and BCH. The vast majority of claims were denied by the trustee. The court approved only $414 million total in claims. The $405 million recovered by the trustee roughly covers this. That leaves only Coinlab (consensus seems to be that $75M lawsuit doesn't have legs and will settle for pennies on the dollar if anything).
I did forget to account for court fees, which are upwards of $55M now. It's not clear to me when the court takes payment for that or if they already have. If not, we're probably looking at no more than $75M in outstanding liabilities, based on public information.
Anyway, I was just responding to your point that everything must be sold. That's not true at all. It partly depends whether the court approves civil rehabilitation proceedings. If so, some BTC creditors will gladly take payment in BTC rather than from the $405 million the trustee is sitting on. The trustee seems more open to it now than in 2014. The main problem is
time because of Peter Vessenes and Coinlab.
Remember that Karpeles will get his share back too. I don't believe the official version.
In bankruptcy, creditors come before shareholders. Creditors need to be fully repaid before Karpeles gets anything.
In any case, what do you think that will happen to the rest of these coins? When a government controls it, they usually don't hold the Bitcoin (because they are idiots) they will dump it in (hopefully) an OTC auction, the problem is we have seen amateurism with this case, so they may dump it on the market, wouldn't be surprised.
The case can be moved to civil rehabilitation. In that case, the company would be restructured and protected from the Coinlab lawsuit. And BTC creditors can legally take payment in BTC rather than JPY/USD.
If all liabilities are covered and suits are settled, there's no cause for bankruptcy proceedings. If not civil rehabilitation, then any remaining funds go to equity holders (Karpeles).