I personally dig the new changes to the skill trees, but I am a bit confused as how tracing works and the perk which resets the tracing progress after a takedown.

From my experience, I noticed the tracing mechanic is a bit wonky at times, and I'm not entirely sure how it's supposed to work, for example, one time, I was being traced, but after resetting the trace to 0% twice (took down 2 guys close up and personal), the trace bar disappeared after a "failed" prompt came on screen, at that time I thought after killing a bunch of guys quickly, the trace goes away, but I failed to reproduce this.

Also, what constitutes a "takedown"? so far, if I kill NPCs through hacks, it does not reset the trace, only taking them out stealthily does so.

I dunno.
The new system makes no sense to me and most of the changes in the skill tree just piss me off.
What amounts to a quick time event to use armour penentration and some other things... I hate it!

As to the tracing... I'm seeing the trace bar continuously go up, no matter if all the enemies involved in combat are dead or not.
There are other enemies left, but not alerted
So in other words, they auto complete the trace no matter what I do.

This is stupid!