Input supports a vast amount of controllers and has a ton of amazing features. Competing with it would be very hard to do. I don't think including juju's input in this project would be the best idea since you don't know what "verbs" the player will be using. However, I think that supporting other input systems would greatly add to the value of this asset. The menu system itself is where this asset really shines. I was hoping that there would be some configuration where I could provide my own functions to control the menu such as:
controls = {
up: function() {
return input_check_pressed("up");
},
left: function() ...