Following the same reasoning, let's redistribute the wealth of the top 1% to the rest of the population.
That would 99% of people happy. You can hardly wish for more support!
You are obviously being a little sarcastic, and I quite agree what you've outlined would be a ridiculous result.
The bulk of the bitcoin wealth originally held by the 20% will only come back to its owners through making a complete recovery of all "disappeared" bitcoins. Someone has them, and whether you're in that 20% or the 80% group, you're not being let in on the secret. I refer here to the 650,000 BTC Mt. Gox claims are still missing.
My point simply was that the whole issue of dividing up the 200,000 bitcoins is meant to be a distraction. So long as people are fighting over getting their slice of a considerably shrunken pie, attention is being diverted away from the fact that the pie is actually much larger than advertised--by more than 4 times as much, yet the largest slice has already been appropriated by an undisclosed party.
Rather than fall for this kind of distraction, as most likely, at least indirectly perpetuated by the perpetrators, it might be far wiser to simply let the 100,000 or so Mt. Gox members in the 80% group have their coins back. That can be accommodated from the "old-format wallet" ones with approximately 80,000 BTC still left over for immediate distribution to the 20% owners. Naturally, once the 80% group have their bitcoins returned in full, they would have no further claim on the, as yet, still to be recovered 650,000 bitcoins, nor any other compensation provided, such as stock issued by a successor company.