Sorry, but I believe it would not be good partially updating/correcting the rulebook. Either one does it for all of it or for nothing. Otherwise, for example, what are we even going to write in the version and the date? "1.5" and "January 2012" probably not, since we would have changes made more than 8 years thereafter, and specifically made for 2.0. "2.0" and "February 2020" is not much better, if only a minor part of the rulebook has been updated, and all the rest (the major part!) is still back in "1.5" and "January 2012", instead.
Really the problem is that the manual is so bad (just my personal opinion), beside the rather minor items to update, that fully updating and correcting it can only be an extremely time consuming and arduous endeavour, if done to high quality standards. If the manual would have been any good to start with, it could have been already fully updated, for only what different from 1.5 and 2.0, with something like less than 1/10 of the effort I put at this first post, I believe.
So, yeah, I don't know how much helpful this post of mine is going to be and, as I said, I just posted it "in case it might be useful to anyone", and I posted it in Player Help because I believe the only usefulness may be for players to read my post and know the rules better than what they get told by the rulebook itself, for the part that I've rewritten.
I didn't want to give false hopes, that's why I made very clear that was unfinished (thus not really a finalized feature request or such, either), I was not finishing it and just made it available in "Player Help", in case it might be of any help to any players that want actually to learn some of the rules.