Block Reporting is a very nice feature. Current is possible to give these parameters:
ARG 1 = IP Address # The IP address or CIDR being blocked
ARG 2 = ports # Port, comma separated list or * for all ports
ARG 3 = permanent # 0=temporary block, 1=permanent block
ARG 4 = inout # Direction of block: in, out or inout
ARG 5 = timeout # If a temporary block, TTL in seconds, otherwise 0
ARG 6 = message # Message containing reason for block
But this don't help to identify the account affected by block. I would like to suggest a new argument, where is passed the affected account username. Passing the account's machine username will be very useful. Passing the username we can, for example, open a new ticket to notify the user about block. With the machine username as parameter, there is a lot of good things that we can do with this Block Reporting feature.