Currently, the loading bar of the revision slider is in bright colors and moves quickly. This leads to some people staring at it while loading, even if they don't intend to use it (but have it pinned to be open always)
Remove the attention-drawing suction of the revision slider loading bar.
Tone down the colors and if possible, use a loading symbol that does not catch the eye as quickly. However, it should still be moving to indicate something happening
#edit-review-improvements came up with three moving dots (T165286). Maybe this could be used here, too?
**Info for the Hackathon 2018**
If you are interested in working on this at the Wikimedia-Hackathon-2018 , @WMDE-Fisch can help you with any questions :-)