Feature Requests SBP "transition between panels"

When creating an animatic for presentation to the client, not animatic as a design drawing of video production, it is necessary to clearly show cuts of cut clearly visual. For that reason it is a good solution to transition between panels.
I strongly hope to control the transition for a certain duration between panels without changing the duration of the scene.
I am glad that easily switch as an option during exporting movies.
thanks.