Seconding this post
made by Jacek where he requests that the Extract Parameter works on components with already connected wires leading into it. I add to this a request that the component be able to do the same on the output, that is be able to extract parameters from the output and move the wires to the new component.
I would also like to be able to "Consume Parameter" to remove a parameter component and have its wires attached to the remaining component. This would allow for easy insertion and changes to components that were already connected to too many wires to track down.