Final Struggles
It's annoying when you've got the last two survivors on hook, in the second phase, and they're clinging on to get their struggle BP even though the game is clinched. It's also annoying to be in this position as a survivor, faced with the choice to waste everyone's time or abandon easy free farm that's right under your nose.
The fix for this is super simple: if everybody still in the trial is on a hook in phase 2, just kill them and credit them the BP as if they struggled the whole time. Everybody wins!
I feel like the importance of lil changes like this needs to be appreciated. The biggest flaw in DBD is the proportion of playtime you spend actually playing is too low. Stripping out downtime and streamlining the flow of the game a bit would pay huge dividends. Note also that shortening turn-around time would improve the queue experience.