I don't doubt that mine is an unpopular opinion, but I use the still protruding bit of the tab's surface as a continual reference point for trigger finger placement as I'm taking my shots.
I've found the Glock to be more sensitive to trigger finger placement and focus on direct rearward pull than other pistols, for whatever reason, and this helps me. I had thought before about shaving flush for comfort, but eventually decided against that for this reason. Curiously, I still prefer the smooth trigger over the serrated, though it doesn't bother me much either way.