Quote Originally Posted by Miralyth View Post
I'm not entirely sure what you have in mind with leniency mechanisms.
A simple spitball:

Fluid Strikes (Trait) - Every third flank or rear attack you land from the correct position generates a charge of Fluid Strikes, which are consumed to cause your next would-be missed flank or rear attack to deal damage as if it hit from the correct position. You can hold up to three charges of Fluid Strikes.

Simple. Intuitive. Not invasive. Actually deals with random boss spins and tank shenanigans.