The codicil. Assuming the 4 black performing CD's in the Atlanta metro are drawn the way one would draw them given the VRA, free of gerrymandering otherwise, and we get rid of the gerrymandering of the white CD's, below is what one might find. The Gwinnett based CD is gone for the Pubs out of the box, GA-05 is unlikely to hold for the decade, and GA-12 may also fall to the Dems before the decade is out. So the legal gerrymander for the Pubs, buys it one CD right away (and an outside chance of even 2 CD's), and one to two more over the course of the decade that might otherwise fall. So the Pubs might actually for the short term pick up a seat in a "fair map," on a relatively short term lease.
Yes, I know, some might not consider the map "fair." That is OK. And maybe it is not the best map that can be drawn. But I suspect most would consider it reasonable, at least in general perhaps, if not here. 
The map looks nice, but one question I have is whether you tried to take into account the full Atlanta metro as defined by the UCC, or was it impossible due the VRA constraints. With 2018 data, the UCC supports 7.3 CDs. You have 6 nested, and 4 CDs that split the remaining 1.3 in the UCC. By the UCC rules that's 1 pack and 3 chop points of penalty.
The use of the UCC may not be so academic as it seemed last decade. If the suburbs are realigning, then keeping more of them together may be beneficial to capturing the trend over the coming decade.
