DS will have a player's choice line when the DS2 is about to come out, or maybe even later. That's just how Nintendo is. They were different for the N64 and the GCN because nothing was selling on those systems and they had to find a way to increase system sales.
Oh and Smash Bros Melee never went Player's Choice. It still does not have that yellow band across the top. It still costs $30 to buy it now.