PS4: Hot Shots Golf 7.

Metroid Prime 4. I'd buy a second PS4 for Legend of Dragoon 2.

- Fatal Frame 5

- Star Wars Knights of the Old Republic 3

I don't have a PS4 yet, but I might get one by the end of the year or at the latest when UC4/FFXV (depends on what releases first, so probably UC4...) release, but some unannounced games that'd probably make me get one as well are:

Ni No Kuni 2
Dark Cloud 3
Final Fantasy VII remake
Persona 6 (or a next gen version of Persona 5)

Overall if Japan would get its act together and managed to create another awesome JRPG generation like the SNES/PS1 gens were, then that'd be absolutely awesome.

Tales of vesperia 2,tales of abyss 2, tales of symphonia 3, tales of phantasia 3,Ni No Kuni sequel/spiritual successor, a new advance wars set in the gba world, Golden sun 4,Blue dragon 4. this would be assuming these where high quality games that lived up to their predecessors as well as other games being on the console that I was interested in.