I wonder if there's any way to change the cursor's appearance or size. I guess not, I couldn't find anything (there used to be a couple of checks in Preferences but not since 2.8 I think), but just in case, I'll leave this here.
Thanks,
EDIT: Yes, I especially meant the crosshair cursor, and I'm on Linux (adding this new information here according to the guidelines because of the first answer I got, thanks anyway).