Right now blender doesn’t really have a render manager, so dealing with multiple renders can be tricky and you might end up using external tools to batch multiple renders.
That said, even if it’s surely not the most professional way to handle the problem, i guess the VSE could be used for this purpose since it allows to take scenes as strips.
The only problem is that the imported scenes are now rendered with the settings of the scene where VSE is currently being used.
A possible solution could be a checkbox that takes account of the scene/strip Render and Output settings.
Obviously this would lead to some problems like the need to disable transitions and any other effect, but a reasonable solution could be supporting only image formats (which are the only formats used in production anyway).
Just to be clear, this is nor a professional nor a final solution, but as a professional and a studio owner I’d consider this a GREAT step forward.
Let me know what you think about this and since i know nothing about code, if it’s something doable in these terms.