Within a campaign, is it possible to export a CSV based on lead status? (i.e. a CSV of all NEW leads or all Warm Follow-Up Leads)

Yes, you can export a CSV specific to lead status! 

Here's how to do so: 

1. 1. Go to Leads > My Campaigns
2. Click into the correct campaign
3. You'll see that the leads have been separated by status. Click into the lead status that you want to export.
4. Select all leads by clicking the two checkmarks to the left of 'Address' (You'll then have to click "Select all...")
5. Hover over 'More' and click 'Export'