I would love to see that feature!

Can always be useful to spot possible hackers or ban avaiders.

Just don't rush it! <3
And about that Country thing.
There are games that fetches it through SQL Databases and/or .dat files.
As example, i have seen an IP To Country modification for PHPBB2 and PHPBB3 forums which does use the SQL Database to check which country that IP comes from.
But that feature isn't really needed.

Would only be lovely to see IP address feature with banning.
As example, that someone can't login due to a ban on their IP Address.