Show path instead of border for traceable sliders

[MandL27]

Describe the new feature:
In current osu!lazer, sliders under the Traceable mod show their outlines only. To me, this defeats traceable's goal by still giving a visual cue of overlapping circles. Showing a line along the slider's path instead of a capsule shape would still show slider paths without revealing circle size.

Proposal designs of the feature:
Old design:

Hasty-ish mockup of proposed new design: