Although I know Apple will not be stuffing the SE2 with the latest goodies from the X, I wish they did. The only reason I moved from my beloved 5 to the 6 was that my eyes needed a bigger screen. I hated (but have since gotten used to) not being able to do everything with one hand. My wife and I have just gotten the X. Lovely device - IMHO Apple's single biggest step forward since the original iPhone - but, being even taller and slightly wider than the 6, it's done nothing to improve one-handed operation.
So I guess I wish the X would be extended downward to the 4" form factor of the SE instead of just the rumored upward move to phablet territory.
But the SE is Apple's low-end device, so it definitely won't have the leading edge X features.