What if the Zagwe Dynasty had remained in power in Ethiopia? What might a surviving Zagwe Ethiopia look like?
If you want the Zagwes to survive, you'd need to handle two issues: succession and anti-Zagwe sentiment in provinces like Tigray or Amhara. The first led to conflict between Lalibela, Na'akueto La'ab and Yitbarek while the other led to Yekuno Amlak exploiting the anti-Zagwe sentiment in the aforementioned provinces to organize a movement to overthrow the Zagwes in 1270. If you want to resolve these issues, have a Zagwe (someone like Lalibela) institute a measure similar to the Solomonids about confining the male line of the Dynasty to a royal prison and have them consolidate control over the Amhara region to prevent Yekuno Amlak's movement from getting off the ground.What if the Zagwe Dynasty had remained in power in Ethiopia? What might a surviving Zagwe Ethiopia look like?
If you want some sources to read on that, Taddesse Tamrat's "Church and State in Ethiopia, 1270-1527" is a good read.If I had the sligthest bit of knowledge about Ethiopian History pre-1500 then I would say something.