I generally would not trust smart contracts to deal with those issues. They run afoul of the classic problem with ensuring that the blockchain and meatspace are in sync with each other.
To wit: it may be very difficult for me to ensure that the smart contract does not contain a malicious payload. Even if we pinky swear to there being no malicious payloads. Perhaps even if I read the code in an effort to personally confirm that there's no funny business going on.
This very problem is a big part of why smart contracts are becoming a popular tool for confidence artists. There seem to be a lot of people who are very (one might even say unreasonably) confident that the fact that smart contracts can't be altered after the fact makes them inherently trustworthy.
To wit: it may be very difficult for me to ensure that the smart contract does not contain a malicious payload. Even if we pinky swear to there being no malicious payloads. Perhaps even if I read the code in an effort to personally confirm that there's no funny business going on.
This very problem is a big part of why smart contracts are becoming a popular tool for confidence artists. There seem to be a lot of people who are very (one might even say unreasonably) confident that the fact that smart contracts can't be altered after the fact makes them inherently trustworthy.