I think the NBT have to be accumulated at pennies on the dollar by way of BTC open market purchases, smartly. This will amplify what remaining reserves Nu has.
Eventually, once a significant amount has been accumulated, and price is on the rise, one could introduce a wall that is substantially less than $1.00 (as in, closer to $0.01). This wall should be a fraction of reserves, so if it gets hit, a new wall can be set. If it gets hit, lower the wall. If the wall stands for days or weeks, move it up.
This action may bring other non-Nu actors who may benefit from the arbitrage. However, we need to assume they will be sellers at some point.
This needs to be done opaquely, which is counter to Nu’s philosophy, otherwise the malevolant actors can overwhelm the funds.
Another thing, the longer we wait, potentially the easier it gets, since NBT holders will lose interest and move away from active selling. However this is a huge disservice to the developers, whose commitment Nu needs.
With all the above, it is not clear if Nu will recover. Yeah, dump those NBT hard … so the price is driven down and we can buy them back at pennies on the dollar, lol.
Lastly, I think future auctions should be done in BTC to bring in funds external to Nu. We need to get NBT off the markets, not out of wallets.