The I-16 is fun because it's kind of a beater. It's in the same vein as the MiG-19 for jets.
It's so limited, it's so restricted, and that makes it a ball. It's the same difference between owning a really nice car vs. a beater. The former always has horror stories about how it got dinged or scratched. The latter you can flip into a ditch, watch it catch fire, and laugh about because it was awesome.
With the I-16, when you pull off something cool in it, it's awesome because of the limitations it presents. I'd like to fly one for real, some day.