For one, we still don't even know if the nx for sure will be a hybrid or have a handheld part to it.
This has been widely corroborated.
Even still, they only make the remakes using the engine of the current gen, they wont make a the next engine for just remakes, it will be gen 8.
That's my point exactly.
DameDiamond and PrincessPearl on 3DS in 2018 (or even 2017) would be insane. That doesn't mean you're getting them as the premiere game in the NX launch window, though.