The new lead section is pretty cool but lacks major functionality. The biggest issue is there is no parameters that you can assign on import that allows you to filter or sort the leads once they import. You basically just get one huge list of leads in no particular order.
What it needs is the ability to add labels on import. I know you can do this manually but I just imported 8000 leads and cant go in and add labels one by one. Even a bulk label option here would be very helpful.
Also, you can only sort by source, owner and label. You should be able to add custom sortable fields on import and sort the lead list alphabetically, by state, by date added, by owner etc.