It would be neat if you could work in visa requirements as well so that it only includes visa-free or visa-on-arrival destinations.
I find easy visas a privilege that not many western travellers are aware of; If I wanted to travel somewhere most of the time I need to first apply for a visa (which can take several weeks). This includes a fee, photographs and fingerprints, and an interview. Not to mention the airline tickets and hotel bookings. When I talk with American friends they complain that their visa-on-arrival is only for 60 days instead of 90 and "it's so unfair". /rant