I'm not an expert in this field, but I did want to say that I had an Asus Zenfone 2 (x86 phone) for a brief time, and app compatibility was never an issue. I ran into 0 apps that I couldn't run.
I had the Zenfone 2 as well, and the notable exception to that was Snapchat. About six months ago, they stopped making x86 versions of the app, and video was pretty pitiful.
Have you had a chance to compare that to the performance of their non-x86 app? I'm curious because I've found SnapChat to perform exceptionally poorly on every Android device I've tried.