Improvements to navigation shortcuts

If you are following the development of 2.8 you may know that our awesome developers are working on a new keymap for the upcoming beast, one of which was double tap the [A] key to deselect.

This double tab thing got me thinking, where else can we apply this, what else can be intuitive to have this feature, and here is what I came up with:

The navigation shortcuts ( the numbers on your keyboard calculator) :

1. Double tap the keys [1],[3],[7] to spin the view, for instance, when we hit [1] once it gives us front view, Now double tap [1] should give us back view, and so on and so forth. this is faster than ctrl+ the key.

2. tapping the [**] key to spin "user view" ( any view you are in), this can be very handy in so many situations, and since the [*] key isn't occupied, I believe it's the best operation for this key.

3. Tapping the [/] key to zoom every visible object to view, now this feature is in programs like autocad and its very handy, it lets you have a look at all of the objects in your scene, if you are zoomed in, it will zoom out until every thing fills the view port, and vice versa.

4. Double tap the [.] key to undo the zoom to selected operation, this can open new possibilities to this operation.

5. Double tap [0] key ti toggle between other cameras, tap [0] once still moves you to the active camera.

Pie menu

Last but not least, Why doesn't the pie menu have its own dedicated key, I find it difficult to press Ctrl+[↹] because they are above each other at the far left of the keyboard.

My suggestion for that is to use the [Q] key, one tap is for the quick menu (as is now), double tap/Ctrl+[Q] is for the pie menu.