not to be flippant, but this is exactly why lawyers go to law school and then work on such docs for years to develop expertise. The value of a lawyer is precisely in what to leave out and what to put in -- and how to phrase it.
The annotations just for California law would be 10x the size of the document.
If any non-lawyers are interested in what a well-executed agreement with commentary looks like, I highly recommend The LSTA's Complete Credit Agreement Guide, which covers an industry-group standard loan securitization agreement. It's 600 pages. There are others, like commentaries to the ISDA Master agreements, but they're niche and very, very expensive.
For lawyers interested in what a masterfully annotated computer program looks like, have a look at Donald Knuth's "literate programs". If you've a uni library nearby, have a peek at his Computers & Typesetting. It's gorgeous stuff. Great pictures, too!
The annotations just for California law would be 10x the size of the document.