If there's already a way to do this, please let me know - I am unable to find anything in the shortcut documentation or in the vMix shortcut system itself.

Having the ability to script or set different transitions into and out of Overlays would open up the possibility for virtually unlimited overlay configurations.
This would allow for a script to set a specific transition when the overlay is inserted over the master output, and configure a different transition for the removal of that overlay from the master output. Eg. a clean cut for the insertion of an overlay, and a fade to remove the overlay. This helps to create some less jarring transitions, but also allows for variety for transitioning overlays on and off screen, which would be useful for producing different segments in the same show that have different styles.

This could also integrate with the upcoming Dynamic Shortcuts feature in vMix 24 - hold a shortcut button set for a transition, then press a shortcut for the overlay you wish to trigger that transition on.

Thanks DWAM.

I am talking about Overlays (1, 2, 3, 4) - none of the information you linked to gave me a direct solution to my request, but perhaps that's on me for not being clear enough - I'd rather ask to be educated upfront than demand a feature be implemented.

None of the shortcuts in the vMix documentation refer to transitioning overlays, only turning overlays on and off, or transitioning inputs between Preview and Live. The only transitions that are triggered are the ones preconfigured in the Overlay Setting menu in the bottom right hand corner of vMix, and even then, you cannot set one transition for the 'In' and a different transition for the 'Out' of an overlay.

Using a Mix input as a permanent Overlay and then scripting the use of Multiview for one of the mix sources would be a work around, but the technique I'm proposing would be a cleaner way of doing things, continue to provide an accurate indicator as to which input was live as an overlay, and would be more flexible for using one shortcut layout across multiple productions.

To be clear, I did a search of the forum using relevant keywords before I posted. I understand that there's been an influx of people new to vMix over the last few months and it can be frustrating seeing questions you've seen answered before, but perhaps there's some people that have also been around for awhile asking for a minor tweak for things that are currently possible via an overly-complicated work around.

+1