Nice. I had a few of the dups let over from my P2. I used the ascend and forward stickers only. Sometimes if I need to do something quickly I get those two mixed up. Stickers that I really wanted were a video and photo sticker. You can't see those while flying so it would be easy to forget which side they are on. I could see the C1 and C2 stickers being useful as those buttons are not labeled either. I think for new fliers the RTH and power button (missing from this set) might prove useful. Not a good idea to mash the power button in a panic.
For the time being I will just create my own photo and video stickers.
Another addition I'd like to see (other then a power button sticker) to every set someone sells are blank stickers that can be written on.
Oh, I also used the small round number to place on my battery. I like these as I like to rotate use of my batteries (when I have more then one) as not to wear out the same ones. Just something small and out of the way.