I have recently ticketed:

SFO-ORD,
ORD-PVG,
ICN-HKG-DEL,
DEL-HGK-JNB-WDH,
JNB-MRU,
MRU-JNB,
CPT-LHR-CAI,
JMK-LGW-KEF
KEF-LGW
LHR-ORD

I messed up and did not request an air segment from JNB-CPT, but requested a land segment.

How easy or how hard would it be to add a JNB-CPT air segment...or should I just keep this as is and buy separately?

I am okay in the number of African segments...based on the new rules land or air segments count the same.