I think the Sussexes should become like the Wessexes. Meghan should become the main personality (breadwinner IYSWIM) and Harry should stay home out of the spotlight and bring up the kids. He should be wheeled out for major events (so we go HARRY we love you, yayyy) and then disappear again. Edward deals with patronages that do not need the extra promotion ie DoE. Harry should take on an existing cause to champion behind the scenes.
I once read that Harry always puts a front on for the cameras and people. Clearly that front has gone. Meghan has proved that she is professional enough to turn up, smile, wave, put on a great show and be the star turn. I think she is a trooper and if Sophie can survive the Sheikstorm and topless photos then Meghan will survive too. But only as long as Harry stays home.