Depends what he wants to play. Sim racing could work, as it's mostly foot control with some arm movement for the wheel. Can be done with one arm and one leg if need be.
Better cross-platform support. In my experience .NET works fine in Mono anyway, so by extension F# is likely fine on Linux/OSX, but your mileage may vary.
Apple has overcharged both in Australia and Europe for decades, even when the currency has been strong. It's simply because they believe that people who live there will stomach a larger price. It's probably true. It's still infuriating.
It results in funny cases where a Nexus 4 can be 1/3 the price of an iPhone 5.
Opera Mini has a proxy server it uses to compress data before it reaches your device. This is extremely useful when using mobile data because it's both faster and cheaper. (At least, in Australia, where mobile Internet is both slow and expensive)
This makes perfect sense; we think of programming languages changing the way solutions are designed all the time. That's why we learn so many different ones.
Unfortunately I doubt this will be proven at any time in the near future... it is nearly impossible to isolate this characteristic from other factors.
This trend towards ridiculously large font sizes is becoming exceedingly annoying. There's been so many articles about it, and many pseudo-techy (trendy) blogs are adopting the large size. 16pt minimum? Really? There's a reason that so few sites and text editors use that by default. It may look great on your retina display but on 99% of screens out there it just makes your site look like it's aimed towards kids.