Switch Node (For Frame Ranges)

Animating multiple mix shaders seems to be the only way to change textures/shader inputs at different frames in the same shader currently, when doing this at scale it is very tedious (when you are bulk rendering multiple shader inputs with different textures at different mapping scales etc).

Could you make a switch node so we can do this easily?

Functions:

• Users indicate the number of switch shader inputs they want via the top input box (which increases the number of shader inputs to match the number specified).

• Users then specify on each input which frame they want that switch to kick in at (the order always plays sequentially from the first input onwards)

I've attached a rudimentary mock up of how this would work

This would be amazing for batch renders