I'd really like to group filters, much like putting similar files in a subdirectory. So, when they display on the portal page, the group name is displayed and they filters are indented underneath them. To stay in line with your style, it'd be great if they could collapse and expand too.

For Example:

Filters By User:
-> User 1 Open Issues
-> User 2 Open Issues

Filters By Project:
-> Project 1 Open Issues
-> Project 2 Open Issues

Thanks,
Eric