No Idea, but DASH has far more functionality than BTC.
The Instamine will always show its ugly head from time to time and will be a hard thing for DASH to ever permanently brush away.
I think that its flawed however to think that its an advantage to be based on BTC code and even incorporate their updates into their wallet.
The whole "compatibility" thing is just a way to attract those who are into Bitcoin to look at a "quality" altcoin perhaps?
Either way, any blockchain technology can be made mainstream and used as a payment processor etc.
Always better to think outside the square and use fresh code.
The Dash got strong development team. One owner owns quite a lot of Dash, so he wants to see it succeed.