Features you would have liked to see in DD

Reading the post about Crawly McCrawlsa wanting a reconnect feature, it made me think of features I would have liked to see in DD. I realise that DD is no longer developed, but it would be interesting to see what people can come up with. I would have liked a Practice mode for dailies, which becomes available each day only after you have completed the current daily (something like Binding of Isaac: Afterbirth). This would allow for what if x or y changed scenarios and messing around with optimizing piety and XP gains, or improving speed (obviously not submitted to the leaderboard).