Leads inbox filtering is missing "label" option
Atm you can only filter leads with one specific label. Lets say you have labels "HOT", "WARM" and "COLD". If you want to see all leads with either "HOT" or "WARM" label you need to do that separately. It is not possible to see them in one view.
It would be good if you could use labels in the filters just like in the pipeline view.