When I cut out this chef's jacket, I did all the alignment tabs as....tabs...sticking out. Now that is a pain, particularly when you use a rotary cutter. I didn't want to cut notches because I was going to flat fell. Didn't think about a tailors tack, but I was going through 4 layers most of the time. Guess it still could have been done.
So I started imagining a tool that would make cutting the tabs less of a pain. Something with a point, then a curving blade.
Then, I stopped by Hancocks on the way home, just in case someone invented it already. Found one. Just stick the point where you want, then rock it down to cut like a rotary cutter does.