Is there a way to display the list of tasks in a more condensed way, ie not taking up much vertical space?
Please clarify - are you referring to the display of labels below tasks? We've set this display to make the names of the tasks all be aligned to the left side. In the past, labels were in the same line as the task pushing the task name to the right.
We may consider changing this option, though and you're welcome to vote for this request in our Votebox: http://todoist.com/Vote/showProposal/837/