The most basic purpose of a list is to show at-a-glance who’s on it. In Wrike we get a row of tiny circles. And it's confusing and tedious to see who those circles represent:
1. You hover over a circle to reveal an 'x' (you learn this accidentally, since it's not obvious there's a hover function)
2. You click that 'x', and then are asked if you truly wish to remove this person from the proof.
The most basic function of this list (seeing who's on it) is buried under a 'delete from list' function, which is itself not very obvious.
Please make this list a simple list - i.e. names and emails, not tiny circles.