I was told during my T 1 training that the ball at the end of the line was not required, so I took it off and tied a little loop at the end of the line to loop into the locking screw when not in use.
My instructor would say (with every gear config change he made me do), ask what benefit something brings to the table. If nothing, get rid of it.
It took a bit of getting used to, but it's not so bad, even with drygloves on.
That's what I have. And its virtually impossible to thread the line back through the guide if you accidentally pull it through. Granted that would in all likelihood be at the end of the dive and you could just tie the loop off and ascend. I have considered adding a ball - but in warm, no glove water I haven't seen a strong need.