Really hard question...
When the game was very young, we used to have a competition, looking for the best GKO player, things have changed drastically since then.
To be honest, i don't think i can give a full lineup, but there are 3 players that surely would be on my list:
*
Maximo Sandoval is probably the best GKO player worldwide... his ability to open matches and assist his partners is unique, only few players can claim to have won a World Cup in U-21 and NT level, he is one of them, and he is the best player from his generation, his current performance speaks for him.
*
Martin Príhoda is the most complete striker in the GKO world, he's got everything: individual skill, setpiece ability, interesting speed and most important, a terrifying scoring ability, Soldberg's numbers are good, but Prihoda's are a lot better: 794 goals in 564 games, really impressive.
* My third pick might admit some discussion, but to me, the strongest keeper in the GKO world is
Zahrudin Bojinović, i haven't met him in club level ever, but in NT level i/we met him many times, and we always had to work REALLY hard to beat him, i don't see another keeper better than him, there are other keepers at high level, but to me, he is the best.
In other positions, discussion might be harder, so i choose to pick only 3 players, maybe other users can help and we might create our dream team, don't you think?