They actually added this before 1.18, but it's new to me as I didn't really play at that time. The issue I have with the current targeting system is that some genius decided to assign the arrow keys to targeting/targeting mode (depends on your settings), away from the hotbar row toggle. Now the only way to switch rows with your keyboard is to be locked on to something or first target something, then highlight your hotbar by pressing enter. This is just a huge annoyance for me as it makes buffing before battle a hassle and sometimes when I'm actually trying to change targeting modes I flip my rows instead. It's a mess, I tell you.
Am I missing something or is there really no way to revert back to the old system? I really don't need the arrow keys for targeting now that we finally have the fabled F1-F9 keys available for FFXI style targeting.