I would rebuy all my favorite Neo games on 3ds if they had any 3d enhancements.
These phone ports are pointless. They take no effort I bet, so whatever profit is to be made must have a low overhead.
I would buy it regardless if it was in 3d or not. I just play it on the go without my fingers taking up half the screen. It be cool if SNK games got the "3D classics" treatment that other NES games got.