So here's an idea for an interesting gate, and one that might make the whole math side of logic more accessible for people who aren't already familiar with the logic gates.
Basically this gate does 1 thing,
it takes 2 math inputs, and combines them into 1 signal so it can be connected to a component input
They are not added, neither value is modified, it just passes either value depending on the boolean ON/OFF input
This would allow someone to make 2 separate circuits for the math, and pass either through, instead of being forced to condense it all into 1 circuit which is a major pinch point for a lot of people when it comes to connecting math up to logic.