Not in the Citites Actually Fun video, but apply for cities, the Pointy Hat (Antonio Demigo) advice from What D&D Can Learn From Baldurs Gate 3.
A players must decide on a COMMON GOAL regarding why they are in the city, in the first place.
Then, the DM must somehow connect the 'backstory' of the Background of each character, somehow, to various degrees, into this COMMON GOAL regarding why they are in the city in the first place.
Short Rests are ... press a button "Bam". Short Rests dont require a full hour suddenly during an urgent adventure. Make each Short Rest "15 minutes" (!). (Maybe even "instantaneous". Hit Dice are already limited, so Short Rests are a dwindling resource. Require a Hit Dice expense in order to replenish spells if any.) (Especially in dungeon crawls shorten the Shorts. But even in a city, when resting is easy, dont interrupt progress because of a Short Rest.)
Dont be stingy with Consumable Magic Items. Let the Barbarian cast a spell from a scroll. Try it for your players. See if you like it.