Why would I rather play Final Fantasy 4 Complete Collection rather than Final Fantasy 4? Why would I rather play Super Mario All Stars rather than any of the games included in their original form? Dem graphics.
Unless the gameplay to a graphically inferior version is better, I'd rather have better graphics than worse. Final Fantasy 4 DS graphics though? Not better. The graphics actually make me not like playing it despite enjoying the new gameplay features and balancing. Graphics look like crap, zoomed way too far in, I'm constantly looking at the map on the bottom screen instead of the top screen. The graphics make the game far worse.