I'm quite aware of Vaas' Test record - he is my favourite bowler, ever, y'know.
It's been disappointing, sure, but there's still far more chance he'd have made an impression than any of the three picked.
In fact, I'm not really that sorry, especially with hindsight, that he didn't play, because he'd probably have got another 1\2-150-odd. That's the way things tend to go against Australia, disappointingly. But, well... you never know. He's a funny bowler, Vaas, can pluck something from nowhere.
And whether I'm glad he didn't get 2-150 isn't relevant, at all, to who'd be likeliest to do the best job for Sri Lanka.