It is something like safe deal, it is a good idea, but I think there will be some minuses and arrive more scammers, not sellers, but buyers, that will get their product, it will be delivered but they will still hold coins and may use, as example, button "not delivered". Yes, of course, this garant service will be good, if it will be, but just imagine how many people that now are using carding will level up?)
Think about that
that's a good question
regular transaction when you buy something and sent the coins and them in seller wallet balance they gone.
the transaction with hold he will receive as normal but unable to use it and you even if not did release the hold you won't receive it back
the transaction is a transaction after sent it gone no matter if you put hold, just this time you got some upper hand over the receiver and not only the receiver
what's the point to hold, if you not going to get it back no matter the hold or un hold?
if people forget to release it from hold:
there will be an automatic expiration time
with notification in your wallet, you can ignore
and the hold will be released and if not it remains
and you can set your own date if needed.
but your question points me to something else that needs to be solved.
if the buyer wants to manipulate the seller:
"yeah I received but you promise this gift. "
and I not releasing the hold till you send this gift etc..."
yes, my money has gone i paid I received the good but why not to squeeze more from this poor seller to release his money.
of course, there are people that will do so, but then again what the difference between this and when you sending your coins to anonymous address and not receiving anything from the other side?
bad people and scammers will be always no matter what we do but at least we can try to do something about it.
it doesn't solve this "buyer hostage" situation same as in another cryptocurrency with seller hostage" situation.
but I try to eliminate some of them as much as I can and keep updating this post to let you know the progress.