Had to put Walcott in, he's been integral to at least three incarnations of the squad in the Emirates years. I remember Messi saying he was the one player we had that he found terrifying to play against.
Also quite surprised to not see Gilberto in more lineups, perhaps a testament to how undervalued his talents were, or indeed to the youth of some of our members
As for Henry, if you think he wasn't still world class in 06/07 you'd be well advised to look again. It was only injury that held him back that year and he went on to be top scorer at Barca at least one season he was there I think (cue someone with more time than me looking that up). He scored one of his best goals in that season too away at Blackburn.
Oh, and as for Van Persie, he would absolutely be my next pick if I had one, but for me he was too undependable for too long to pick over the others. He was shite for long stretches when trying to recapture fitness, which is to be fair what he spent much of his career with us doing.