I didn’t comment on the portion of your point 9 that discussed the font style of tempo-change markings because I have not dabbled with them enough to know if any means to change them exists. Perhaps one can alter the paragraph style, but I have not explored that or heard anything that suggests it is possible.
If Dorico decides to create a means to print to PDF as a default, I am fine with that. I just read what seems to be so many posters impatient for one-key solutions to solve (what to me are) minor problems compared to the large chunks of the program yet to be implemented. I recall the progress of Finale from the first version on; convenience options grew as the program matured, and I am sure the same will happen with Dorico.
Like you, I have great confidence in the Development Team.