Looking for alternatives isn't the best option for users from banned countries. It had always be the right move after lbc started asking users to verify their identities since few years ago. One of the best alternatives is localcrypto [old localethereum] which is a decentralised peer to peer marketplace that offers the possibility to migrate reputation from lbc or paxful. But this option should not be available anymore for deleted lbc accounts and even for unbanned countries which will be asked to verify their identities before to use any option in the platform or even to see available trades.
I do not think that this matter is difficult because you will not start from scratch, but will benefit from the cumulative experiences from LBC and will continue to maintain your reputation if you can prove that you are the one who manages that account so the chances that you will sell will remain better than beginners.
I agree with your point in general. The problem with lbc is that banned users will not be able to use their reputation made during years in lbc for two reasons:
1\ Lbc deleted some accounts [but still hold a copy] .
2\ With users from unbanned countries who can't verify their lbc accounts won't also be able to migrate the reputation because lbc services won't be shown till completing verification.
I don't think it's that easy to prove the ownership of lbc account if lost access to it or if the account is deleted.
For daily active traders, it's easy to start from scratch building reputation by time. But think about those who lacks activity and often using lbc. Personally, i used lbc many times during my first years in crypto, to find a buyer or a vendor in my local, hadn't too much feedbacks but i had a respectful experience which i used it to prove honesty in other peer to peer trades.