Slip Tool Improvement

TL;DR, in the trim preview, show what is under the CTI when performing a slip / slide edit. 

When using the slip tool (Y) and your CTI is parked somewhere in the middle of the clip, performing a slide edit only shows the four following edit points:

1. Last frame previous clip

2. first frame current clip

3. last frame current clip

4. first frame next clip.  

It would be extremely helpful to have a fifth preview of what is actually being slid under the CTI. I feel like this is a no-brainer.

Currently my workarounds are either:

Workaround A

1. split clip at CTI, delete left of playhead. 

2. Do a slide edit with new in point that is at the CTI/Sync point I am trying to achieve. 

3. extend in point back to original point. 

Workaround B

1. Put CTI where I want  hold Ctrl+Alt Left/Right and manually nudge the clip back and forth until it lands where I want.