Claim at the time of BK: 50 coins @ $100/ea. Was told that mtgox only had a small fraction of deposits left and there were non-depositor creditors suing. 10 years later and there’s ~20% deposit payouts happening in btc.

That’s roughly the situation. The trustee sold some of the coins so some will be cash.

Maybe whatever coins they recover increases in value substantially and creditors can be made ‘whole’ like with mtgox?

No.