Ok this may sound really stupid but I keep losing track of where my cursor is, ESPECIALLY during raids during HUGE AOE BLOBS.
I'm not sure if there's an addon out there (other than omouse, which I already use (It helps a bit, but not much )) cause sometimes I have to click on the target I need or for some other random thing on my screen (Please just avoid the whole "well you should have EVERYTHING keybound" or "stop having addons that pop things up you need to click" because I know this is an issue for more people than myself.).