Even if you don't accidentally ruin relationships, you might ruin the good behavior alongside the bad. I'm a big fan of a feedback system I've heard called "stop start continue." Stopping these bad behaviors, and starting these good behaviors are in the same vein of fixing bad things.

But continuing these existing good behaviors is really important too. If you tell people what not to change, then they won't accidentally change the good stuff in their efforts to fix orthogonal things.