Question:
What happens, when all available Spendable balances in all currently available (online) wallets go to Staking, and there are ~150-200 confirmations left before the Interest awards begin getting confirmed and coins released from Staking back to Spendable? With no Spendable left, who finds next block?
If all goes well, confirmations should eventually be brought down to a reasonable number. That should reduce the possibility of that happening quite significantly.