@scorpio_cassadine: That would be awesome!!! But I don't think they have the guts to do it. Would be cool if they did an Atlantean wedding and showed Arthur and Mera starting a family before Manta suffocates their baby. Then Arthur gets serious.
It could be about politics. With Manta and Shin working together to reveal Atlantis which would lead to political issues Arthur has to deal with. They could do that arc in which Arthur had a confrontation with Supes (who was representing the US). It wouldn't be as awesome but it's more likely.