I have also requested to allow optional blocking of Zero feedback and new users in "Buyer requirement" options.
Currently, only users with negative feedback can be blocked. However, since ebay.in does not allow sellers to give negative feedback to buyers, the "buyer requirement" option is valueless.
It is also child's play for existing users to get around blocked IDs by simply creating a new ID.
Buyers also simply ignore statements in the listing that new users are not allowed, and then leave negative feedback if their order is cancelled.
I understand that ebay.in wants to encourage new users, however, creating an option in buyer requirements to block 0 feedback and new users will go a long way to make ebay a smoother trading platform.
Someone from eBay, please consider.