Multi-edit mode? (Possible suggestion)

I’m wondering if there is a way or would be nice to be implemented:
If Blender would allow multiple selected objects to be edited at the same time in sync by
simply selecting objects, then going to edit mode and both meshes would be editable.

This would be great for Proportional editing multiple selections.

There’s an Addon that works well.
MultiEdit ALPHA 2

If you want to edit both at the same time, or want the effects of proportional editing you can temporarily fit the objects into one using ‘ctrl+j’ and separate them again by pressing ‘p’