Currently, SetMultiViewOverlay lets you replace the current input for a layer with a different input. The format for SetMultiViewOveray is index,input. I'd like to see a new function, let's call it SetNextMultiViewOverlay, whose format for the value is index,input1,input2,...inputN. Pressing the shortcut key advances to the next input in the list. In addition to accepting the identifiers for regular inputs, it should accept "none" as well as dynamic input variables that represent an input identifier. This will allow a single shortcut to manage all the inputs for a given layer in a multiview as opposed to using n shortcuts for the layer if there are n inputs.

Example: You have talent coming in by way of 7 camera inputs (e.g., cam1, cam2, ... cam7). You have a multiview where the first layer (index=1) is for the current talent, plus other layers as needed to complete the multiview. You need to quickly move from the current talent to the next. Set your shortcut with this value:
1,cam1,cam2,cam3,cam4,cam5,cam6,cam7
In case you overshoot the desired input, set up a second shortcut with this value:
1,cam7,cam6,cam5,cam4,cam3,cam2,cam1