Here list all Jumps/ Jump Combinations that you'd like to see performed which are impossible. I'll start with mine.
-triple lutz-triple flip
-triple axel-halfloop-triple axel
-a quintuple jump
-triple lutz-halfloop-triple flip
Well, I think that the quadruple axel will definately within the next 20 years be tried somewhere because of this point system, i am a skater as well and my goal is to be the first to land it in competition and in combination. I am going to try and qualify for the games in '14 or in '18 and in one of those Free Skates if I make it there i'm going to attempt two quadruple axels.
The triple lutz-triple flip is something that I don't think has ever been done because of the fact that to do them in combination, you have to do the second jump in the opposite direction, and I don' t know one skater that can jump in both directions.
Quints i'm sure will be seen within the next 20 years as well.