Will there be a separate balance for ETH added to increase the TTL and ETH intended to be managed by the contract or is it the same balance?
Will the ETH balance pay for the rent (be reduced over time) or is it intended just as some sort of state lock?
I ask these questions to get a picture about the backwards compability od this proposal and if it requieres developer of smart contracts to add extra code to manage this or if it is totally transparent.