I don't think ICANN would allow icann.sucks to exist. Even if that's not explicitly in writing, it would be foolish to bite the supreme leader's hand, wouldn't it?
But FIFA better cough up $2,499 in "protection" money or there will be no shortage of people trying to grab that one.
Dunno. How many .com domains are too many? People around here put way too much emphasis on the top level part. They're just domains, who cares how many there are.