When defining a Sprint from the Planning View of the AgileBoard, it would be useful to see at a glance the assignee for each issue. Using profile images would be sufficient for identification. This would allow for improved resource allocation and avoid overloading.
As a work around, we determined we could create quick filters in the form of:
assignee in ("<team members name">)
in the quick filter while in "plan". This unfortunately forces you to step though every team member and ask "are you properly loaded ?"