Advanced Select and tweak.

the way select and tweak work should be upgraded for more functionality, there should be 3 more options:

1. Tweak loop (Fast tweaking of entire loop).
2. Proportional tweak (Showing the proportional fall off like weight paint). Also in the bottom left the slider is showing the fall off size.
3. By holding shift key the cursor should automatically behave like relax brush.

Please don't say that you can do this with some trick, i want this to be enabled by default for faster workflow. Just see this video how easily and efficiently houdini can do that.