One of the features of Fusion 360 that totally blows me away is the ease of animating designs. One small suggestion that may help those like me who occasionally want to show animated springs -- how about having a 'cloaked' component. The idea here is that the cloaked component is invisible, but any associated component or body would be invisible. whenever the 'cloaker' is in front of it. I guess this association could be set as an option in the Assemble menu. This would be great for hiding part of a spring, and it would appear to expand when withdrawn from the cloaked component [ e.g. a cylinder around the spring ]. I'm sure if pushed, I could think of other situations where this could be useful.