I use the adjustment brush a fair bit....... I know we can change the colour of the adjustment brush area applied - but depending on the images sometimes it's hard to see those grey pins - particularly against b&w images and if you've got a lot of adjustments applied - sometimes you spend ages trying to find where I placed the actual pin.
If we had the option to change them to a bright... red, pink, yellow etc - that would be really helpful.
I can't be the only one..... who sometimes wonders where they've put there pin?
P.s Also when I'm syncing or using the previous button occasionally I miss the odd pin in a random place, I forget to delete it...... and then realise I've been applying it to the last odd 30 photos or so!