I suppose projects and users have various needs for information in "my overview". While some use the message module very much and hence want it to be given much space, others emphasize the milestone part. Hence, I suggest that the account administrators are given the option to construct their own overview, tailormade for their project.
Thanks for sharing your feedback with us! We do plan to continue to work on improving the overview of the workspace during the year. Your feedback will work as an input to this work.