Would be really sad to see them add Dash because of some hype. I'm sure they would do more research on this stuff. Unless they get paid or something.
From a technical or purist perspective, they wouldn't add Dash.
But here's the rub. From a technical or purist perspective, they shouldn't have added ETH either, but they did. To me, this means that the ability to cash in outweighs technological aspects for them. So I wouldn't put it past them.
Even if Dash is added, that won't change the fact that its privacy is terrible. For people who want privacy and fungibility, Monero delivers that now. And Monero has many features in the works that will help more users to choose Monero (multisig, kovri, mobile implementation, etc.). So it's smart to buy Monero now because its value will increase due to it's supreme privacy and upcoming features.