It might be somewhat arbitrary, but I’ll share my suggestions with you: I like having bullet points at the beginning of each upgrade description and I’d try increasing the font size of the bonuses granted. I wouldn’t use bullet points for “Unlocks…” nor bold text—I don’t think that’s information that needs to be emphasized. And I'd try leaving an empty line between the bonuses and "Unlocks".... Is there any reason to separate Cavalry from Infantry?

What think?  

That's already the case but you might have it disabled, check option or it's also a hotkey still "Atl+C". Thanks to @guerringuerrin this hotkey will be unassigned next release as it tends to troll people. Also in the PR i made all range overlay are forced enabled for the placement previews.

Is there a way to also show ranges of buildings that shoot arrows? To know where to place buildings. Ideally showing all these ranges when pressing something, while not cancelling the placement process.

thanks, ill see if i can figure this out, but its probably above my paygrade