One more feature suggestion: Let people customize the short code. That would be your USP. I can't get a preferred short code on more popular url shortner like bitly because chances are it's already taken. You can provide that.

Another: add password protection. Say I want to share my daughter's birthday photos with my friends, I can have a url like fry.io/{hername} and also have it password protected. That will add value over bitly or goo.gl.

Just my $0.02.