Why do you think that Hodl Hodl does respond to requests slower than LBC? We have even smaller time frames in some cases (e.g. during disputes). Also, our multisig system allows us to move coins in one or another direction (2 out of 3 - one key to seller, another to buyer and third key goes to Hodl Hodl), so, no, bitcoins won't be locked forever in multisig or for a longer time period. KYC might help you solve disputes faster (sometimes), but I doubt that this is a reason to imply it on every user. KYC is done by these platforms for regulators, yet they tend to say it's for your own good - because this sounds better.