Repeat Grid: Apply wires to all grid cells
In Design mode, changes are applied to all nodes. When linking a node in Prototyping mode, I think it's relevant to have the ability to reflect those changes across all nodes as well.
A boolean option when prototyping that either let's you link them individually like it is right now or use the same value for all nodes would be very interesting.
Do you mean when adjusting a repeat grid that has had copies of it made, it will adjust the copies as well?