In the Day (and multi-day) view, the all-day events get a certain amount of space at the top of the screen, and the time-specific events get the rest of the space below them. Let us control how much space the all-day events get. Right now it seems to be unchangeable.

I can think of three options here. (1) In the settings, we could specify a percentage of the screen height to give to all-day events, for example, 20%, 40%, 60%. (2) On the screen itself, we could drag/drop the border down, as needed, to give the all-day events more space. (3) Or we could tap a toggle button to give the all-day events "as much space as they need" even if they need more than a screenful and we'd have to scroll to see them all. Speaking for myself, I'd like all three!

I use all-day events for ongoing jobs (like reports to write and events to plan), and always have a large number of them. I'd love to see more of them or all of them at a glance.