This is the Baseless Speculation section. I think we could eventually see a step back in the story, but in fact the Neo-Walkers story seems to be incompatible with the Sundering events...
The ideal contrast between the Mending and the Sundering, however, seems interesting!
Shards of Alara went after Future Sight on October 2008. So after Dominaria we'll return to Alara and see what really happened during the Sundering. The early years of Ajani in Naya, Elspeth in Bant and Tezzeret in Esper; the history of the Kingdom of Vithia and the traison of Sedris; Crucius and the creation of etherium; the foundation of the Knights of the Reliquary.
Possible reprints: Baleful Strix and Shardless agent.
The ideal contrast between the Mending and the Sundering, however, seems interesting!
Possible reprints: Baleful Strix and Shardless agent.