Great guide. Should be rated "easy". With only 15 screws and a connector, no adhesives, no flex cables or flimsy clips, this battery is basically user-replaceable.
That's an excellent tip. You should edit the guide.
Agreed. The suction cup method shouldn't be mentioned. I'm also extremely delicate with electronics and gently opening the display with a single suction cup is essentially impossible. The spudger needs to do all the work.