1) I'd love to see a list of "people" on a project that shows when they logged in last.
2) Upon adding a person, I'd love to be able to add them to "n" projects. Right now, I have to go the the project page, and pull them there. I'd rather push them on creation of the person. Likewise, a "permissions" matrix on each person's page would be nice. Right now we have:
* Update Profile
* Change Password
* Update Avatar
* API
* Delete
* Schedule
Why not just add, "permissions" and have a) their role, b) a list of all projects, with a permissions grid for each project. That would be uber slick.

On the last time logged in feature, I used it a lot when I was on that other Project Management Software to see if my clients were able to get in. More to watch clients and see if they are using it than to watch employees or consultants.