Target lock on toggle

When playing on mouse and keyboard, aiming at an enemy and holding any skill button makes it so you lock onto the target and you can't aim anywhere else until the held skill button is released or the target is dead. The lock on makes it so that it is harder to hit what you're actually aiming for. When I'm playing Monk and I throw the bell I have to stop attacking, target the bell, hope that it's not near enemies that could take the aggro and then I can sometimes hit it. It can make fights easier for some people, especially on controller, but I believe it would be a huge QOL change if we had an option in the game settings to change between target lock on and cursor direction attacks.

Also, if you hold down the button, you can't read the mods on rare. I keep my shield up almost 90% of the time next to them.
I have almost 100 hours in the game and I still don't know any affixes on mobs except the obvious ones like fire res etc.