filter out deleted projects altogether; remove the column
checkbox is a tiny click target. Make clicking anywhere on the row check the checkbox. Except the links within the row.
In the Admins column, only show their username & link to /u/username (not all the User info like current)
CSS formatting in sftheme to make cells narrower so it all fits.
add ability to filter by date/date ranges (doesn't have to have a pretty UI, just simple textboxes ok). See how /nf/admin/task_manager does date range filtering via ObjectId.
remove the count() query since that is very slow with the $ne clause (that can't use an index). If the pagination doesn't work without knowing the total, change it to be a "next" button, which just passes a param that feeds into the date range filtering.