> Possibility to use single axis sun tracking mounts for panels, so a unit of capacity generates more electricity each year

I read an HN comment earlier this week that noted that solar panels are so cheap that is is more economical to just install more panels than to pay for the expense and maintenance of moving parts. I.e. you can generate the same amount of extra energy that tracking would give you by adding more fixed untracked panels. And fixed panels with have no moving parts which makes maintenance super cheap.

A quick glance around at internet articles seems to confirm this take.