Keyboard shortcuts - mappable

It would be nice to have keyboard shortcuts for several things. Some have already been suggested for toggle grid, camera movement. I'd like to add a key instead of scroll wheel click. Also keys for zoom in and out so when I have an object selected I can zoom the map instead of rotating the object. Being able to map your own keys for what's already been suggested and whatever gets suggested down the road would be great! Maybe people who like this could add the shortcuts they'd like in the comments?