In Diablo III there is a group shot at the end of an Empowered Monolith run which shows a close up of everyone’s character models along with stats from the run. Having a similar feature after a timeline boss or at the end of a dungeon run is a cool way to show off your gear and inspire a search for a piece that you don’t have yet.
The showcase would appear alongside the blessings, quest rewards, etc that are currently displayed after finishing a timeline. They would be arranged at a similar angle to the character select screen, but a little closer to the camera to display all of the sweet loot. Clicking on them could display their detailed gear loadout.
This screen always felt like a cool “mission accomplished” capstone in D3. During normal gameplay, everyone is running around casting fireworks. This screen of downtime would also afford players an opportunity to leisurely look over their teammates’ characters without having to chase them down.