Werebat
Explorer
I'm also not concerned about them because in my experience any player that has agreed to the goals of play doesn't abuse things and limits themselves to builds and decisions that are fun for everyone and help create an exciting, memorable story as a result of play. So it's just a matter of establishing the goals and seeking buy-in before play.
I'm seeing a lot of this "session zero" stuff lately -- I'm a little curious where it came from.
Your statement above is typical, and seems to mean essentially that "X isn't overpowered, so long as the players agree not to abuse it."
It's interesting and all, but couldn't that argument be made for even the most comically abusable of rules? If every PC has an "I Win" button that they can use whenever they want in any combat (even if it isn't their turn), it's not a problem if they agree not to abuse it, right? Once you've agreed to that, you've effectively left the table where game balance is discussed.