2, 3 and 4 are enough for me. Unless the NX is more powerful than PS4, I won't bother using it for multiplatform games.
Also there's other tangible stuff like How many games are in the pipeline. I never bothered with the Wii U because it didn't convince me at launch that it had a healthy year ahead. Over time this was kind of the case for every year, some were decent but none were great and then Nintendo announced NX so I thought I'd wait...







