It should be possible to remove all information on a card except the name. In the current revision, the bare miminum for a card is a line showing the list name and another line showing the name of the task. If I add a flag, more space is required, so the card gets a little bigger. This is fine. However, if I remove the flag again, the card does not shrink to its original size, but now shows the additional parameters (all greyed out) permanently. I would like to see the card shrink to its original size in this case. A better solution would be to allow users to choose what to display on a card and what not, with the task name only as the minimum.

If the cards get too big, I cannot display enough of them on one screen (without scrolling) which makes ClickUp less useful in my very crowded projects.

+1 for this but for a different reason. I signed up recently and was trying to figure out why I found it harder to work with board view compared to Trello. One of the main reasons I realized is that there is too much clutter on the cards if the start and end dates are included which makes it them harder to process at first glance. I trialed it out by removing all my dates from the tasks and can confirm that it looks a whole lot better. In board view I want to have just the task name visible for simplicity so this feature would make me very happy indeed.