@witchking42
p.1 - remains actual, by my oppinion
you're right at p.2 - my fault,
p.3 - oh yeah it really works as you described, with the arrows UP/DOWN, but - I suppose that some additions to the UI are required, to make it more intuitive usable for the users. It's difficult to guess that these values are changeable in this way.
p.4 - I tested in Chrome, Safari and Firefox-
Chrome= zoom
Safari = zoom
Firefox = scroll, as before!!!
Nice finding, but I think it would be better to include this as the option in the Preferences section.
p.5 possibly you're right.
So, summing up, I will forward the remained questions to the discord channel, many thanks for comments!