the technology died with CRT TV's.
light guns cannot work with plasma's and LCD's, etc.
you now have to use a sensor (wii bar or kinect or PS eye) and special controller but the accuracy is terrible in comparison which makes the gameplay terrible and unrealistic.
they need someone to invent a new tech which will work with modern tv's, but seeing as there are so many more variables now than there was before; refresh rates, 3D, plasma, LCD, LED, etc. it is going to be hard to make something which works with all of them with very little problems.
Yeah I'm aware of all the technical reasons etc, but I don't care!
Make it >_<!!