Interesting, is this suggesting that all of these are necessary?
Also it feels a bit unbalanced, with too few items in the 'Research' section and too much detail in the more UI focused activities.
I highly recommend you use a checklist, and even better, make your own. It should consist of the things you miss often, not just the things that you always need to do.
I also recommend printing it out and going over it live, if you're colocated. Makes it a tactile experience. For us, we have a pretty integrated process, so going over it at both project kickoff and when nearing completion/final review was useful.
Overall it probably made the biggest impact of any one thing to the completeness and consistency of quality of our product launches. Pretty great method.
If you're interested in more, read Atul Gawande's "The Checklist Manifesto" about using checklists to improve outcomes in hospitals. Great book.
I totally agree with you and thanks for the book suggestion. I have a checklist of my own and depending of a project I choose which methods or tools to utilize. It keeps especially the early concept phase structured and focused which I think it's the hardest phase because of all the unknown factors.
I can't help but feel a bit of irony in a UX help document that is visually inconsistent.
This might be a repost but for people who haven't seen this, it can be very useful.