The proposal suggested by Do Kwon and Terra Labs right now can be gamed. If I know that this is the plan, then I will spend a few dollars right now to buy Luna to get millions of it. Even if I only get a fraction of it back with the new Luna, then those few dollars I spend now would be worth more than the amount that I had spent prior to the attack.
The proposal linked here would be a more fair way around this that can’t be gamed: The only solution for a fair fork
But before thinking about how to distribute new Luna, think more about how to make the new chain resilient to any attacks or death spirals like the one we saw over the last few days.