We tried that and they failed miserably. The players just weren't capable of performing as a team.Personally I think the A-League standard is a lot higher than people give credit for.
I think you could make a starting 11 out of the best A-League players and they would do surprisingly well.
However, with the new influx of players and others stepping up a considerable notch within the last year, both technically and tactically, it's definitely worth trying again.