I Like to Move it, Move it! Do you?

Do your users ever have the need to create real-time dynamic motion in their assemblies but have wiring, chains, or springs that just won’t update on the fly?  Would they like them to be able to?  We need your input.  What kind of motion should this be?  How it should work?  How would this benefit the user?  What kinds of applications do you have or see using this?  Please keep replies limited to this subject and as always, thank you for your input!

Solidworks