Here's a previous thread about Cinematics: This Thread
Getting back on topic, removal of day/night cycle or resting to reset abilities would be immersion breaking. Every edition of d&d that I know of used this system. In baldurs gate 3 you play the role of a adventurer in forgotten realms setting. With-in this setting people can only do so much in one day, your spells and abilities will tax / fatigue you. The more of a ability score you have invested the more you can achieve in that day (how much you can carry around, spells known, etc).
I don't recall a d&d game that used cooldowns instead of a rest system (besides mmos).
