I have been playing Baldur's Gate 3, and the rules in the computer game are slightly different than the ones in paper 5e.
One that I found surprisingly OK in the game was that the duration of several concentration spells, like for example expeditous retreat, was extended to run until the next long rest. (Not all of them -- invisibility or fly for example not).
A computer game plays differently than an in-person RPG; for example scouting with a familiar is a lot more cumbersome to execute than just saying that the familiar moves ahead of you 90 feet at the game table, so you do not do it as routinely, making the familiar a lot weaker.
But I still wonder: how unbalancing would it be to allow expeditious retreat in the tabletop game to have concentration until the end of a long rest, (or until concentration ends, for example when you are incapacitated by sleeping, using the Xanathar rule that sleep is considered giving you the unconscious condition)? Does anyone see any dangerous exploits this would enable?