It'd be great to say Snapchat would just roll over in time, but I'm not quite seeing the comfort in that. Sure, one can say that, but its at worst a dream.
I personally believe that Windows 10 Mobile has significantly less time left on the table to even stabilize and provide a reliable Windows Phone 8-grade experience again regardless of the Snapchat situation than the community has time to wait for the still soaringly popular Snapchat to pull a MySpace or otherwise implode.
And integrating them into Skype should they be acquired is not a hot idea considering how Skype on Windows Phone has performed to date.
Just my two cents.
Back then Snapchat was possibly the most major single obstacle overall, I fear its not the case anymore.