Aquilani is far the better player than Henderson on every level, Kuyt would stay wide right and centrally there would be a midfield of Lucas/Adam/Aquilani.
And you can only judge Adam on his displays so far, Aquilani hasn't played a PL game in a year+ so you can hardly say starting Adam over Aquilani if it came to it is justified.
What has Aquilani done wrong exactly?
He performed well in pre season and internationally...Every time he has played he has stepped up and delivered, nothing else he can do to be honest.
You'd have to ask Kenny - I'm sure he knows - he sees & talks to the players on a day to day basis. I don't know ....attitude ? Desire to play for the shirt ?