Taking inspiration from @abetts popular idea for some tweaks, I implemented a few changes to the Application page:

• Increased size of app icon, name, and caption
• Removed blue line separating header and screenshots/description, since it was controversial and kind of pointless and inconsistent when the metadata section didn't have a text header
• Displayed screenshot thumbnails with the aspect ratio of the full-sized image, so they look better and nothing is cut off in the thumbnail
• Gave screenshot thumbnails a drop shadow and more padding between them

Errata:

• The screenshots lost their hover effect as a side effect of the way the QML DropShadow effect had to be implemented. I tried many ways of adding it, and this was the way that caused the last amount of damage. Definitely open to suggestions.

Tested in KDE Neon:

Pitivi, before:

Pitivi, after:

Audacity, before:

Audacity, after:

Clementine, before:

Clementine, after:

Mobile view Kdenlive, before:

Mobile view Kdenlive, after:

Mobile view Endless Sky, before:

Mobile view Endless Sky, after:

Mobile View gedit, before:

Mobile View gedit, after: