Well none the less I believe that you will be able to come up with a fair and balanced system to do so if it's an update or a whole product whatever (if you do, do it) please drop a line here.
I would be very interested.
I listen to 3.5 private and there I heard about that your looking at making counter spell a reaction there.
Currently I use my own hodged podged counter spell system that I made and it is really good.
But I would love to see what a real designer could do with the idea.
After reading through...