It would be nice to have a custom screen for an artist to enter their time logged that would be a more traditional weekly view. Each row would be a task assigned to the artist during that timespan (or to start simple, maybe just any task they are currently assigned to), and each column would be a day of the week. Then they could pop from cell to cell dividing their time amongst their active tasks.
You could then add additional functionality like 'Copy hours from previous day' or 'Copy from last week.' Would also allow batch editing - enter the same amount of time on a given task for multiple days.