Guys this isn't hard to find. I lifted it straight from the Dragonair website.
At least 3000 hours total, including either 500 jet hours or 1000 multi engine turbo prop hours in command of a multi crew operation;
So your assertions that T/P hours are completely useless are completely wrong.
So for a free Q400 type rating and a 3 year bond you'd have close to the required number of hours for Dragonair.
Not a bad investment considering it wont cost you anything.